Showing posts with label Science. Show all posts
Showing posts with label Science. Show all posts

Thursday, 19 June 2025

Some Beautiful Minerals from GM Museum of Schio

I like beautifully coloured minerals and I like to learn about ancient beliefs about the power of different minerals. For example, in India, based on people's astrological birth-charts, they are advised to wear certain mineral-stones to build up their positive energies and to counteract the negative influences. 


However, minerals have also played a fundamental role in the human history. In my first post about the  Geo-Mineralogic Museum (GMM) of Schio, their president Alessandro Sella had talked about the mineralogical history of Schio and surroundings starting from the Copper age mines.

This post is about some specific minerals from Schio and its surrounding areas. It also has information about 6 of my favourite exhibits from the GM museum.

Alessandro Sella about local minerals of Schio in the Museum 

I asked Alessandro Sella, president of the to tell me about the exhibits of the local areas around Schio. 

Alessandro: We have samples of the oldest Quartzite rocks present in this area, which are metamorphic rocks (1) primarily composed of quartz. These have more than 300 million years. These can be found in Pasubio valley, Torre Belvicino, Recoaro Terme, etc. They are important because these are the base for all the successive sedimentation leading to our mountains.

Then we have Yohansenite, a mineral found in Monte Civillina in our territory, which is recognised widely. For example, I found references to it in a book in Ottawa.

Around 15 years ago, some of our members, while on an excursion in Monte Trisa in Valle dei Mercanti, came across an old mine-complex, where the rare mineral Laurelite, as well as corkite and lanarkite were found.

We also have the quarries of Pearl-grey Marble in Val Posina along th Astico river, as well as in Ronchetta (in the Pasubio valley). These abandoned quarries were active around mid-18th century, and this marble was used also for the altar of the church in Valle del Pasubio.

Then there is the Sandstone of Val Gardena, which is a sedimentary rock that comes to the surface in the Pasubio valley and Torre Belvicino, cut into round-shaped stone disks with lathe machines, which were used for sharpening knives and scissors, as this sandstone is formed by sand which is rich in quartz, which is one of the toughest stones (7th on the Morse scale). The image below shows quarzite and sandstone specimens in the GM museum. (You can click on all the images for a bigger view) 


We also have the Agate stone (a kind of Chalcedony) found in the Timonchiello torrent which joins Timonchio, and comes down from San Rocco under the Tretto area of Schio. Agate is also a quartz, it is very beautiful stone even if the ones in Schio are not as colourful like the ones found in Brazil.

 

Among the precious stones, not so much in economic terms but in scientific terms, we have Pink Quartz from Campo Grosso. Then we have brucite (magnesium hydroxide) and magnetite (ferrous oxide), both from the pearl-grey marble quarries. We also have zircon (zirconium silicate) found in the caves of Novale. 


Among the minerals from other parts of the world, we have some big and imposing looking Amethyst from Brazil, which is a quartz stone in a shade of violet colour. 

My Personal favourite 6 minerals from GMM

To conclude this presentation of GM Museum of Schio, let me talk about 6 of my personal favourites.

Malachite: In the museum, there are two rocks with Malachite from Namibia with beautiful velvety looking green deposits over white crystals. It is composed of copper carbonate hydroxide. The name comes from Greek and literally means Mallow-green because it has the colour of Mallow leaves. Since ancient times, Malachite was used to produce copper as well as, used as a semi-precious stone. It was also used as a green pigment in paints. 


Xonotlite: The specimen in the museum is from Spagnago, south of Valdagno, not far from Schio. It is an ino-silicate mineral with prismatic or needle like crystals. Xonotlite is a luminescent mineral, producing grey-white florescence in short UV light. I like its creamy and chalky white flower-like appearance. 


Blue Smithsonite: The beautiful turquoise blue rock in the museum is from Sardinia. The zinc containing smithsonite mineral comes in different colours. It was discovered in 1802 by James Smithson, the person who donated money for the creation of the famous Smithsonian museum in the USA. People who believe in powers of crystals, say that it helps to calm the mind and they recommend it for anxiety, depression, low energy and even, shyness.


Iron Pyrite: It is also called Fool’s gold. Schio’s GM museum has different samples of this minerals, which were found when the tunnel connecting Schio and Valdagno was built in the 1990s. It is an iron sulfide mineral, with a metallic brass-yellow hue. Striking against pyrite can produce a spark and in 16-17th centuries, it was used in firearms.

I especially like the sample of reticulate pyrite found near Schio, it looks like a shining lace overlaid on a black rock (in the bottom-right part of the image below - click on the image for a bigger view).


Rhodochrosite: This red coloured manganese carbonate mineral sample in the museum is from Peru. Its name comes from Greek, Rhodo means Red, and Chrosite means coloured. For people who believe in the power of crystals, this stone is good for getting love and compassion and it is supposed to help you get over heart-break.


 Crocoite: The beautiful saffron-red prismatic needle like crystals of Crocoite are from Tasmania in Australia. It is a lead-chromate mineral. Its name comes from the Greek “crokos” which means saffron. It is too delicate for jewellery, while people believing in the power of crystals use it for energy, vitality and detoxification.

 

In Conclusion

If you want to visit the GM Museum in Schio, it is located in the old Cella Barracks on Via Pasubio, not far from the city centre. The museum is open on saturday afternoons from 3 to 7 PM and entrance to the museum is free.

When I had asked Alessandro about the name of Monti d'Oro (Gold mountains) near Schio, he had told me that it was only a legend and gold had never been found in this part of Italy. However, this area is rich in iron pyrite, which is also called Fool's Gold. Looking at the samples found in the Schio-Valdagno tunnel, they do look shiny like gold. Thus, I was thinking that may be the toponym Monti d'Oro had come from pyrite rocks. What do you think?

I also think that apart from the scientific and practical curiosity about rocks and minerals, since ancient times, human beings also associate specific, or even magical, powers with some minerals, and create stories, legends and myths about them. I think that a guided tour of the GM museum, which touches on those myths and legends about the minerals in GM museum would be very interesting.

If you visit this museum, do share your experiences in the comments below. You may also like to check my earlier post about this museum where I had spoken to Alessandro Sella, president of the GM Museum.

***** 

Notes 1. Metamorphic rocks are formed when existing rocks are altered by heat, pressure, or chemical reactions deep within the Earth which changes the rock's mineralogy, texture, and chemical composition.

Friday, 13 June 2025

Geo-Mineralogical Museum of Schio

Schio, in north-east of Italy, has a wonderful little museum about local geology and minerals of the surrounding areas. It is hosted in the stable buildings of the old Cella military barracks, not far from the city centre. The Geo-Mineralogical (GM) Museum has free entrance and is open on Saturday afternoons, when the volunteers of the local Geo-Mineralogical Association (GMA) can guide you its collections.

Recently, I had an opportunity to visit the museum and to talk to Alessandro Sella, the president of Schio’s GMA. (The image below shows the museum entrance - you can click on all the images for a bigger view)


This first part of my blogpost is about my talk with Alessandro. A second part of this post will focus on some of the exhibits from the museum. Finally, there should be a third part, focusing on the contributions of Pietro Maraschin, a 18th century geologist from Schio.

Let me start this post with a brief history of the building which hosts the museum.

Cella Military Barracks: Brief History

These barracks were built in the second half of nineteenth century and functioned till the end of second world war. In September 1943, when Italy asked for armistice, it was hosting the 57th Infantry Regiment. It was attacked and occupied by the German soldiers, who used it for their troops as well as a prison for the partisans.

In 1945, when Germany lost the war, on 29th April, the German troops stationed in Alto Vicentino gathered in its courtyard and left for Austria through the Fugazze pass on the Pasubio mountains.

The old barracks were bought by the municipality of Schio and the old stables were renovated. These now hold the Geo-Mineralogical museum as well as the offices of Association IV November, involved in historical research, especially about the first world war.

Pietro Maraschin Exhibition

Though I knew that there was this GM museum in Schio, I had never been to it.

I learned about it in an exhibition on Pietro Maraschin organised by the museum in collaboration with local schools. He was an amateur geologist known for his mineralogical studies in Schio. That exhibition was an opportunity to know more about some of the local toponyms and their links with geology and history. It was also an opportunity to see some of the exhibits from the GM museum.

The image below shows the inauguration of this exhibition (click for a bigger view). Thus, I decided to visit the museum and asked Alessandro for an interview.


 Talking to Alessandro Sella, President of  the GM Museum

 Q: Alessandro, how did you develop an interest in geology and mineralogy? 
 

Alessandro: I was always passionate about natural sciences, I loved studying them at high school and university levels. I never lost that passion and thus even if I work in another area (as a product quality manager), I continue to be active in this area in my free time. I deeply love Schio and its surroundings, I was born here. (Alessandro Sella, left)

Ever since I was a child, I was very curious about places like the Pasubio Valley and the little Dolomite mountains. I wanted to know why a rock was dark and another was white, how were they formed, why do certain plants grow only in one area and not in another, why some animals live here and not others, and so on. About ten years ago, I became associated with the GM museum and I am its president for the last 6-7 years. My aim is that our little museum should remain alive and active. It is a private museum, maintained by the work of all the volunteers of our association called MUSA and the GM group of Schio. I feel that this museum is important because it narrates the natural and geological history of this area.

This area known as Recoarese (area around Schio which covers Recoaro, Pasubio & Leogra Valley, Astico valley up to Posina and Laghi), is important because it is the southern most part of the Alps which have an outcropping of crystalline basement, which is a metamorphic formation, more than 300 million years old, on which different geological layers are located. Our museum exhibits showcase this big local geological and mineralogical diversity. At the same time, we have a lot of geological and mineralogical samples from other parts of the world, all the continents are represented here.

Q: Ancient humans have a long history mineralogical knowledge and discoveries. How was the situation in this part of the world?

Alessandro: In the Leogra valley, the area known as Valle dei Mercanti (Merchants’ valley), has traces of human occupation from the copper-age. They were using this metal because the rocks in that area have copper.

More recently, during the reign of the Venice republic (Serenissima) this area was known as a metal-district for the extraction of zinc, lead, copper, iron and even silver. For example in the Tretto area of Schio, around the area of the St. Patrick’s well (Pozzo di San Patrizio), there used to be extraction of silver, used for minting money. As the stores of silver were exhausted, the mines were abandoned.

From 1000 CE till medieval periods, groups of persons from Tyrol and lower-Bavaria regions, were invited by the local Bishops, to come and settle in the Leogra valley, as they had the necessary skills for fine wood work as well as for mining. These Germanic groups were called Cimbrians (Cimbri), literally, ‘good carpenters’. Many locations and family names of this area carry the traces of this immigration even today.

Then around the end of 18th century till the end of the second world, there was a new phase of mineral extraction in this area.

Finally, an important extraction was of Caolino, a special clay formed from alteration of volcanic rocks formed from ancient volcanic eruptions, in this area, which was used for a different kind of industrial development. It was linked with production of porcelain, ceramics and paper-industry, which were active till early 1980s.

Q: Tell us about the origins of this museum.

Alessandro: Schio’s mineralogical group was formed in 1973 by persons like Prof. Luciano de Zen, Girolamo Zamperetti, and many other friends. They were all passionate about geology and mineralogy. The group changed different locations along the years and started putting together some exhibit boxes to showcase their first collections of the materials made during their walks and excursions in the area. In the year 2000, the group was given some space in the basement of the old primary school building in Magre, where the first exposition-room was started.

The present location in the old Cella barracks was inaugurated in 2013, and it is no longer just an exposition room, it is a proper museum.

Q: Earlier you spoke about the valley of merchants in Pieve. It also has Monti d’oro (Gold mountains). Did they really find gold there? 

Alessandro: That is just a legend. It was an important area for different metals, as I have explained, starting with copper and iron. There are stories about finding gold there, but they are just stories. In more recent times, there was an article about finding a rock containing an iron-mineral, where they have found traces of gold, but it did not have any gold deposits.

Q: The area around Arsiero called Laghi is called Val di Ferro (Iron valley), did they have iron in that area?

Alessandro: If you go towards Valdastico, there is a place called Fusine, on the banks of the Astico river, where they did have smelting of iron (from the verb ‘fucinare’) found in that area, and used the water-energy of Astico river for this purpose. We have also found signs of Ematite (iron mineral) extracted in Valle dei Mercanti, which was taken to Fusine for smelting of iron.

Q: Tell me about the different collections in this museum.

Alessandro: The mineralogical collectors can collect materials from different parts of the world or they may limit themselves to some specific geographical areas, such as our collection of the minerals of Alto Vicentino. Some collectors focus on some specific kinds of minerals, for example, there are persons who collect only Agate stone, known for its colour bands. Personally I am interested in the geological aspects and minerals of our own geographical area.

Among the collections of our museum is that of Alessandro de Grandis, one of the founders of this museum, that is given on loan to us by his son Ugo.

There have been many donations as well, including one from Mrs. dalla Fina, who was a traveller, geologist and speleologist with geological and mineralogical samples from different parts of the world. She left all her writings and materials to the museum in her testament.

These persons leave their collections not just to us in the association and to the museum, but to all the population.

Q: Tell me something about the different aspects of the minerals which are studied.

Alessandro: Each mineral has a geometrical aspect, which is about how that mineral is built. Another is the aspect about its chemical composition.

When I talk to children about it, I explain that we can look at the ingredients of a mineral and then, we also need to look at the dress or the form those ingredients take which determines what kind of mineral it is going to create.

Knowing both, the form and the composition, of these is fundamental for classifying the different minerals. Every mineral must have a name, a family name and the location where it is found, for its scientific and naturalistic value, which can be very different from its economic value.

Q: If you are shown a piece of rock, looking at its colours and form, can you tell its composition?

Alessandro: Generally speaking yes, eventually with the help of some of our members. We have these stereo-microscopes here for looking at the rocks under the microscope. We also have different volumes of books about geology and mineralogy. With the help of these, we can identify them by looking at their crystals, their colours, hardness, etc. and classify them.

Bigger laboratories can do spectre-photometric tests to analyse the spectrum of different minerals in a sample.

Q: We can now create molecules of different chemicals, such as those used as medicines, in the laboratory. Can we do similar creation of natural elements? For example, can we create iron in the laboratory?

Alessandro: It is a difficult question. I am not conversant with some of the new technologies like Nanotech, but I don’t think that we can create elements. For example, thinking of all the ‘rare earths’ elements used for technology such as microchips, whose mining is much in the news and is associated with difficult international situations, because we can’t just create them. For the time, we need to focus on recycling and reuse.

Conclusions

Thanks to Alessandro for sharing his knowledge and being patient in answering my questions.

The second part of this post will look at some of the interesting exhibits from Schio's GM Museum.

*****  

Friday, 4 August 2023

Life Beyond Us - Science Fiction & Essays

Recently I have read a very interesting anthology of Science Fiction writing with an euqally interesting twist - it also has essays about the science behind those SF stories. The book is titled "Life Beyond Us", it is edited by Julie Novakova, Lucas K. Law and Susan Forest (2023, Laksa Media).

It has stories by some of the well-known names of science fiction and is presented by the European Astrobiology Institute (EABI).


What would life be like if it evolved in a cold ocean beneath an impenetrable shell of ice? Or on a world whose haze obscured any view of the universe beyond? Is there a common template for life, or can we expect to find preciously fragile silicon creatures drifting in seas of liquid nitrogen? How would finding alien life change our society?

Life Beyond Us, a new anthology by the European Astrobiology Institute and Laksa Media, depicts the timeless quest for finding alien life in 27 science fiction stories and 27 science essays, aiming to imagine, inspire and illuminate.

I loved reading this book and would like to share some of its aspects which I found illuminating.

Science in the Science Fiction

SF is based on science and is different from fantasy. In SF writers can imagine the future or distant worlds, but they do so based on science or on scientific hypothesis.

However,understanding the science behind each SF story is not easy because it can come from different and specialised fields of expertise, from technology to physics to chemistry to medicine and innovation. I loved this book mainly because each story is followed by an essay which discusses the basic science behind that story. I loved some of the stories, but I loved even more some of the essays explaining those stories because they made me think in unexpected directions.

Below are some examples of the information in the essays which were new for me and which made me think.

Safety of Humans and All Aliens

Giovanni Poggiali in his essay about a SF story by Erik Choi wrote about the fears of humans to make sure that we don't import alien life forms to earth because we may not have immunity against them and they can decimate human and/or animal life. This is something we all understand.

However, I had never thought about the vulnerability of aliens to the pathogens from earth. When we send space-ships to moon or mars or to some other star outside our solar system, is there a danger that some of our bacteria or virus can go with them, and then infest and kill the alien life forms?

Poggiali's essay about ensuring the safety of all life forms on earth and on other planets, made me think about the difficulties of limiting contacts with our bacteria and viruses. We can't sterilise our intestines, also because our gut organisms are fundamental for our well-being and survival. In the long-term colonisation of other planets, I am not sure how this would play out.

Star-Forming Cocoons

Stefano Sandrelli in his essay about a SF story written by Renan Bernardo, talks of an astromical discovery by Bart Bok and Emily Reily in 1940s about a small black cloud which they called globule. They proposed that new stars were being formed inside that globule.

Sandrelli talks about Bok Globules to explain that the space is not empty and that approximately 2% of the total mass of our galaxy, the Milky Way, consists of low-density matter, mostly as a gas, called the interstellar medium (ISM). ISM is 91% Hydrogen and 8.9% Helium. However, 1% of ISM is made up of dust. I have always thought of space as being empty and this information was very unexpected.

Titan, Saturn's Moon

The essay by Fabien Klenner about a SF story by G. David Nordley explains that Titan is an iceball, with a thick atmosphere (4 times as dense as earth's atmosphere) and very low gravity (around 14% of earth's gravity). This information has been used to plan a Dragonfly mission to Titan in 2027 which should reach its destination in 2034.

On earth we have carbon-based life which needs water as a solvent. Titan does not have the conditions for a carbon-based life but it may have conditions for a nitrogen-based (azotosome) life.

Can azotosome based molecules create life and what kind of life it would be, is a tentalising question.

A Really Hot Venus

Sanjay is the hero of the SF story by Geoffrey A. Landis, who wants to go down from his space-ship to visit Venus. Dennis Honing, in his essay about this story explains that Venus is so hot that it cannot host earth-like life. It is hot because it is closer to sun and because it has a lot of CO2, a greenhouse gas.

He explains that on earth the long-term maintenance of climate is due to the carbonate-silicate cycle. CO2 in the atmosphere is dissolved in rainwater, forms carbonic acid, which interacts with silicate minerals. Its product, calcium carbonate, is deposited on earth in areas where tectonic plates converge. As it reaches earth’s interior, those carbonate sediments melt and CO2 is released back into the atmosphere. A main requirement for the whole cycle is the presence of liquid water on earth's surface.

I had read about acid-rain but it was the first time that I was reading about CO2 cycle and wondering if carbonic acid contributes to acid rain? Does this carbonic acid go into water bodies such as lakes and rivers? What impact does it have on the climate? It was a chapter, which left me with a lot of questions.

In Conclusion

The above are some examples of reflections and questions induced by the scientific essays in this book, written mostly by young European scientists. It was a long time that I had read a book like this one, which surprised me so much and made me stop and think so often!

If you like reading science fiction and are generally interested in science, this is the book for you.

*****
#sciencefiction #science #bookreviews #europeanscientists #anthologyofsciencefiction 

Tuesday, 8 December 2020

Bonsai & the Life in the Plants

Last month I visited a Bonsai exhibition at the Jaquard gardens of Schio. The sight of tiny plants looking like a miniature version of full-grown trees reminded me of a nature-visit in Bologna some years ago. This post is about two different ways of thinking about the life-forces in the plants. At the same time, it is also a reflection about the relationship between humans and nature. (Click on the images for a bigger view)

Bonsai plants exhibition, Schio, Italy - Image by S. Deepak

Indian Ideas About Nature

Let me start briefly with some of my ideas about nature, which are influenced by my growing up in India. Hinduism is full of Gods and Goddesses, each of whom is linked with an animal and a plant species. There are many mythological stories that teach one to respect all the beings as a part of the respect for the sacred.

There are different stories linked with plants in the Hindu mythology. Like the story of the sacred Tulsi plant (Indian Basil), which represents a pious prostitute. Thus, people believe that this plant should not be kept inside the house, but must be planted in the courtyard where the families can pray to it at dawn and sunset by lighting a lamp near it. The 1960's Hindi film Parakh had one of my all time favourite songs, Mere Man ke diye (The lamp of my heart), in which Sadhana lights a lamp and prays to Tulsi plant. According to Ayurveda, Tulsi is an important medicinal plant. Such myths and sacred stories, are ways to remind the communities about the importance of different species of plants and animals, and to safeguard the biodiversity.

I remember my grand-mother once telling me to not to pluck the leaves of a plant at night because "the plant was sleeping". I think that such a way of thinking illustrates the popular understandings of life in the plants among Indians. While in the cities, people have a more transactional ideas about nature (for example, that it is good for breathing and well-being, it is relaxing and stress-busting), in the smaller towns and villages of India, I feel that there is still a lot of respect and traditional knowledge about these ancient understandings of nature.

Bonsai Plants

Literally the term Bonsai means "planted in a vase". The aim of growing a Bonsai is to create a realistic representation of nature through a miniature tree.

An exhibition of Bonsai plants was held at the beautiful 19th century Jaquard garden in the centre of Schio. It is a small garden but is very beautiful, with an old theatre and a green-house. The exhibition presented the plants grown by the Bonsai students of Schio under their teacher Dr. Ennio Santacatterina.

I spoke to Ennio to understand about Bonsai. He explained that he had discovered his passion for Bonsai after his retirement. His school is a part of the Bonsai Art School and its classes are held in a local plant shop called Garden Schio.

Bonsai plants exhibition, Schio, Italy - Image by S. Deepak



Ennio sees Bonsai as a part of the Zen traditions from Japan, in which it is fundamental to understand kamae, the basic and essential nature and characteristics of each plant. He cites the Bonsai guru Aba Kurakichi and says, "We must conserve all the specificities of the nature of each plant because Bonsai is a life-art." This means that each plant will develop according to its own characteristics and the Bonsai-maker must know how to enhance its individuality and highlight its beauty by selecting the appropriate style, branches and spaces.

I think that it means that a Bonsai is not created but rather it is nurtured, grown and gently guided. It is an exercise in mindfulness, in which the Bonsai-maker searches for a connection with the plant through silence and meditation, to understand its nature and develops a vision of how it should grow. Then, with patience and mindfulness, the maker helps the plant to achieve that vision.

Free-Growing Nature

While Bonsai speaks the language of Zen, meditation and mindfulness for creating a connection with plants, it seems as if the plant is moulded into an idealised vision of how it should look. It reminded me of another encounter about plants - in 2011, I had an opportunity to meet Mr. Marco Colombari, a gardener and plant-lover from Bologna, who had some very radical ideas about the plants.

Marco had guided us in the discovery of a forest, talking to us about how to observe and "see" the plants. A century ago, this forest was an "aviculture centre", an area for developing and growing different species of birds. Then it had become a hunting laboratory and a honeybee cultivation centre. In the 1980s, surrounded by multi-story apartment buildings, this area was supposed to be used for building more condominiums. However, the local residents had started a campaign to save it as a natural area. It is now managed by an association called Oasi dei Saperi (The Knowledge Oasis), which promotes it as a site for the conservation of biodiversity. It is known as the Forest of St. Anna and is located in the Corticella area of Bologna.

Marco's point was that every plant is a living being and has its own characteristics. He felt that people decide about planting trees and plants without really thinking about those natural characteristics. Thus, every time we cut the branches of a tree for making it fit into our urban landscaping, it is like closing an animal or a bird inside a cage. In the forest, he had shown us parts of the trees where the branches had been cut, making us look at the seeping liquids from the cut surfaces and drawing parallels with injured animals.

Marco Colombari in St Anna forest, Bologna, Italy - Image by S. Deepak


Besides the natural forest, St. Anna Forest also has some other areas including a botanical garden for growing medicinal herbs, a small pond which was used in the past for jute production and a group of ash trees with old artificial nests which were used for keeping birds when it was an aviculture centre.

Some Reflections

Listening to Marco had a very strong impact on me. Reflecting on his words and coupled with the philosophy in the Indian sacred books of Upanishads, I feel that it is the same life-force flowing inside the trees and plants which flows in every living being.

How do I reconcile this understanding with our daily business of living? There is a proverb in Hindi which says "If the horse becomes the friend of the grass, what would it eat?" I think that this proverb sums up the basic dilemma of our life - the impossibility of avoiding violence, if we wish to live.

Thus, I think that all life in the world is inter-connected and there is no way we can avoid eating other life forms, till the time comes for us to die when we return back to the earth, turn into our basic elements and become a part of the never-ending cycle of life, death and decay. To me it means respecting nature and all forms of life, which I translate as avoiding giving unnecessary suffering to my fellow creatures. Thus, I feel that individuals can decide if they wish to eat meat or they prefer to be vegetarian or vegan - it is a matter of choice linked with personal convictions.

However, I think that keeping animals to be used for their meat (chicken, ducks, sheep and cows) in narrow spaces, which do not allow them to move, and making them eat food laced with hormones and antibiotics so that they can fatten quickly, or hurting them unnecessarily, are wrong.

It means being kind to the animals and birds that we keep as pets. It means, taking care of the nature so that our biodiversity is maintained and strengthened. It means that if we have a zoo or a circus, we shall ensure dignified spaces for keeping the animals and treat them with care. I think that zoos and wild-life parks can play an important role in saving species close to extinction and in teaching young people about the importance of safeguarding nature and biodiversity.

Some people would completely separate humans from other animals because they see all human-animal interactions as basically evil and unwelcome for the animals. They are against keeping pet animals, they don't like zoos, they do not want any experiments involving animals - I feel that it is an extreme view and does not help the animals or the nature.

I hope that science and technology would soon progress so that one day we can have all kinds of food, including meat and fish, grown in cell-cultures. In the meantime, I would like more humane conditions for the animals we keep for meat.

Conclusions

Coming back to the plants, does making the plants grow as miniaturised Bonsai trees means that the plants are being forced into unnecessary suffering? Probably Marco Colombari would say yes. I don't think so. I feel that Bonsai practice, by helping us to seek a connection with the plants through mindfulness and meditation, is another path to recognising the importance of nature.

The evolution has made different life-forms co-dependent on each other. We have biomes inside each of us, made of billions of bacteria and viruses - every time we are ill and take medicines, we are killing millions of them. Life, death and decay are a part of a never-ending cycle going around us all the time and there is no way we can say that we don't want to be a part of this cycle.

Lichen and moss at St Anna forest, Bologna, Italy - Image by S. Deepak


This reflection about the life in the plants, makes me think of Shiva, the Hindu God who controls the never-ending cycles of creation and destruction in the universe. I think that Shiva is a metaphor of the life and death which connects together all the organic and inorganic matter of the universe. It is the life-force moving the particles composing the atoms, which combine to make the molecules of different elements, the building-bricks of everything in the universe. Life and death are illusions, because those atoms and the forces moving their particles, they do not die and will continue to combine and create new forms all the time.

***

Friday, 29 May 2020

God, Consciousness and Mathematics

In the 2 May 2020 issue of New Scientist there was an article about a new mathematical theory of consciousness. According to this theory "all kinds of inanimate matter could be conscious". To me this mathematical understanding of consciousness sounded very similar to the explanation of Brahman, the universal consciousness, in the Indian texts of Upanishads. (Click on the images for a bigger view)

A painting by Rashmi Malhotra, Delhi, India - Image by S. Deepak


In 2018, I had written about different ways of understanding God in different religions and how the Upanishads define God in many ways, including as Brahman, the all pervading universal consciousness. This post can be seen as a continuation of that same argument and focuses on the article from New Scientist and its similarities with the ideas in Upanishads.

Here. There. Everywhere?

Michael Brooks' article is titled "Here. There. Everywhere?" He starts with the Integrated Information Theory (IIT) proposed by American neuroscientist Giulio Tononi in 2004. Then he explains the ideas of Johannes Kleiner in Munich and Sean Tull in Oxford, which start from Tononi's ideas and refine them. Tononi had proposed that consciousness was a characteristic of information-exchange and if we could measure that, then we could also measure consciousness. Kleiner and Tull have attempted "to identify the necessary mathematical ingredients of IIT, splitting them into three parts. First is the set of physical systems that encode the information. Next is the various manifestations or “spaces” of conscious experience. Finally, there are basic building blocks that relate these two: the “repertoires” of cause and effect." According to Brooks, the significance of this work is the following:

One consequence of this stimulus might be a reckoning for the notion, raised by IIT’s application to grid-shaped circuits, that inanimate matter can be conscious. Such a claim is typically dismissed out of hand, because it appears to be tantamount to “panpsychism”, a philosophical viewpoint that suggests consciousness is a fundamental property of all matter. But what if there is something in it?To be clear, no one is saying that fundamental particles have feelings. But panpsychists do argue that they may have some semblance of consciousness, however fragmentary, that could combine to generate the various levels of consciousness experienced by birds or chimpanzees or us. “Particles or other basic physical entities might have simple forms of consciousness that are fundamental, but complex human and animal consciousness would be constituted by or emergent from this" ...The idea that electrons could have some form of consciousness might be hard to swallow, but panpsychists argue that it provides the only plausible approach to solving the hard problem. They reason that, rather than trying to account for consciousness in terms of non-conscious elements, we should instead ask how rudimentary forms of consciousness might come together to give rise to the complex experiences we have.

Consciousness in Upanishads

Upanishads are ancient Hindu texts written in Sanskrit that often touch on the nature of reality. "Ishavasya" is one of the first Upanishads, dating back to different centuries before Christ. Its name - "Isha" (God) and Vasya (Lives in) - comes from its first line:
Sanskrit text from Isho-Upanishad

It means that God pervades everything, both animate and inanimate. It is similar to the hypothesis of the mathematical theory proposed by Kleiner and Tull, as the text equates 'God' with 'Consciousness'.

The Upanishads define different levels of consciousness including Turiya or absolute consciousness. Turiya is the state of pure being in which awareness is present but the experiences are not accompanied by any thoughts, and it can't be described in words. This philosophy of non-dualness, the unity of our personal consciousness with that of the universal consciousness is known as Advaita philosophy. To me these ideas sound remarkably similar to the considerations of Kleiner and Tull.

Some Hindu texts differentiate between Parmatma or the universal consciousness and Jeevatma, the individual consciousness, where Parmatma is the ocean while Jeevatma are the rivers. There are other explanations about different levels of individual consciousness inside animate and inanimate world, which can be seen as "rudimentary consciousness" in Brooks' article.

The concept of Brahman or the universal consciousness is deeply rooted in Hinduism. It is expressed in words like Brahmand or the universe and Brahmin, the one who has spiritual knowledge. It is also used in the Beej Mantra to be chanted or meditated upon during Yoga and meditation, such as Swam Ho (I am), Aham Brahma (I am the life force), Aham Shivam (I am the eternal truth). Thus, if Kleiner and Tull's theory is about universal consciousness, then according to the ideas of Upanishad, it is also a theory of God.

If we think of God as universal consciousness pervading every object and being of this universe, perhaps we will learn to respect the environment, the rivers and the mountains, the trees, insects, birds and animals, and all the human beings.

Conclusions

I think that with greater scientific and technological understandings of the world, the role of religions will change in our lives. Today, for many persons religion continues to have a fundamental role in differentiating and defining right and wrong, good and bad, permissible and prohibited. However, for many others, religion only has a spiritual significance because it allows us to give a deeper meaning to our lives, but it does not have a prescriptive role.

Questioning and refusing parts of our religious beliefs is essential for many of us. At the same time, our ideas about right and wrong are shaped more by concepts of human rights, equality of all human beings, and, love and respect for the nature. We can pick and choose aspects from different religions, which speak to our heart, but we are not bound by the walls separating them.

A painting by Prince Chand, Delhi, India - Image by S. Deepak


I think that this kind of questioning approach to our religions will become dominant in the coming decades and centuries. It is how I look at Hinduism. The phase of human culture dominated by prescriptive religions with rigid boundaries and commands is coming to an end. As humanity will become more self-aware and self-confident, it will focus on spiritual dimensions of religions, allowing each of us to have our own ideas of right and wrong. There may be inspirations to understand the world in our ancient texts and religious books, while there may be other parts that may not appeal to us. And, there need not be a gulf separating the ideas of God from those of mathematical theories.

Note: The images used in this post are from an exhibition of Indian artists held in Delhi in January 2020 and are by Rashmi Malhotra (a mathematician and an artist) and Prince Chand.

*****

Sunday, 24 May 2020

A Creativity Megahub in Schio

Can 3D Printing provide good quality and better fitting prosthesis to persons with disabilities? I was looking for the answers to this question. The problem was that my knowledge about 3D printing was extremely limited and so I had to first understand about 3D printing. (Click on the images for a bigger view)

Megahub workshops' area, Schio (VI), Italy - Image by S. Deepak


A chance live-telecast on Facebook introduced to me to Megahub, an initiative promoting creativity and technological innovation, which helped me to learn the basics about 3D printing. I will write a separate post on the possible role of 3D printing in making of prosthesis. This post is an introduction to the Megahub initiative.

The Question About 3D Printing

3D printing was supposed to completely transform the world economy and our daily lives. All we needed was a 3D printer and we could have printed in our village everything that we needed, from medicine pills to shoes and clothes, in the designs and colours that we wanted, at almost no or very low cost.

However, after the initial hyperbolic predictions and enthusiasm for a few years, today we do not hear so much about it.

It was in this background that I was asked the question about the role of 3D printing for the production of prosthesis. A prosthesis serves to substitute a missing body-part - for example, an artificial arm for a person with arm-amputation.

My Chance Encounter with Megahub

I live in Schio, a little town in Italy, about 80 km north-west of Venice. About a year ago, I wanted to learn about post-processing of digital photographs. Searching on internet, I had found that Megahub organised such courses, so I had written to them and asked to inform me whenever they had such a course. After that email, nothing had happened and I had forgotten all about it.

Then, a few days ago, while I was trying to learn about 3D printing, I saw an email from Megahub, saying that they were going to do a live telecast about 3D printing on their Facebook page. When I read that email, it was almost the time for that telecast, so I immediately clicked the link. The telecast was an introduction about the technology. After the telecast, I checked the Megahub website and found that they had 3D printers and provided basic training about how to use them. I immediately signed up for an introductory session.

Learning About 3D Printers

Silvano, my teacher for 3D printers, is a great person - simple, unassuming and passionate about the 3D printing technology. I had a half-hour appointment with him, instead we talked for 2 hours and he patiently answered all my questions, explained everything with examples and showed me stuff about different kinds of 3D printers.

3D Printers, Megahub workshops' area, Schio (VI), Italy - Image by S. Deepak


At the end of this session, now I have a much better overview and understanding about 3D printing and its possible role in making prosthesis. I will write a separate post about it.

Megahub Services

Megahub is one of the activities of a social cooperative of Schio called Samarcanda, which is active in different areas such as support for refugees, homeless persons and women in difficult situations. Their main office is on Via Paraiso, a few kilometres from the city centre. Part of their building is dedicated to Co-Working, where you can rent a working space and have an office with access to a meeting room, internet, printer and a kitchen.

Megahub is one of the activities in that building, and it has a separate space with an open-space layout which is subdivided into two kinds of areas - an area with machines for rent and learning; and, spaces which can be rented by start-ups and artisans.

Megahub building, Schio (VI), Italy - Image by S. Deepak


The Learning & Machine Area of the Megahub includes labs for 3D printing, photography studio, electronic lab, laser cutting, CNC milling machine, welding, woodwork and carpentry. For each of these areas, you can join their training courses as well as, fix individual appointments for learning about the use of a specific machine. You can also book a machine and make things for your personal projects. For all of these, the costs are very reasonable since it is run by a social cooperative. The teachers are all young and passionate persons, who often go beyond their professional roles to try to help you.

The Start-Ups and Artisan spaces can be rented for a small amount by persons who are starting their professional careers. For example, presently one of the spaces is rented by a young ceramic designer while another has a couple making artistic mirrors. In one space, a guy has a green-house setup inside an old cold-drinks' box where he grows orchids - it is completely automated, so he can control it from his mobile phone.

I think that Megahub is a wonderful opportunity for young entrepreneurs to get a supporting environment, where they can work by themselves and yet be surrounded by others, who can become friends and supporters. They can try their ideas without risking a big amount of money in setting it up. They can learn from their failures without wrecking their savings and if they are successful, they can move to their own place. In this way, they also do not need to invest money in buying expensive machines, they can rent those existing in the megahub for the actual use by paying little amounts.

For more information about Megahub and to use its services, write an email to info@megahub.it or check its website: www.megahub.it

Conclusions

This post is my thank you note to Silvano and his colleagues, Martino and Pietro, for their generosity and helpfulness in teaching me all about 3D printing. I think that the basic idea of Megahub, as a supportive space to help persons to learn about technological innovations and to help young entrepreneurs in converting their ideas into reality, is a wonderful opportunity, which all cities should have if they are serious about nurturing young entrepreneurs.

Silvano, Megahub workshops' area, Schio (VI), Italy - Image by S. Deepak

The image above has Silvano showing a 3D printed guitar with colourful LED lights in it, that they had made in Megahub (the mask is inevitable since these are COVID-19 days!).

If I was not already so busy, I think that I would have loved to learn more about woodwork at Megahub and make wooden objects, which was one of my secret desires when I was young! Who knows, may be, I won't be always so busy and one day, find time to dedicate myself to learning it at Megahub.

*****
#megahub #megahubschio #workshops #workingspaces #3dprinting

Saturday, 28 March 2020

Surgery in Ancient India & Ganesha

Ganesha, the anthropomorphic divinity with the elephant's head, is one of the most loved God-figures in Hinduism. Some persons have claimed that the Ganesha story is a sign of knowledge about advanced surgical skills in ancient India and that those ancient surgeons knew how to transplant an animal head on a human body. While such claims are laughable, I do believe that there can be some links between the myth of Ganesha and the knowledge of surgery in ancient India. (Click on the images for a bigger view)

Ganesha statue, Vashishta Temple, Guwahati, India - Image by S. Deepak


This post is about surgery in ancient India and how it could have given birth to the Ganesha myth.

The Ganesha Story

I love the figure of Ganesha. For me, it symbolises the omnipresent links between humans and different aspects of nature, which permeate different aspects of Hinduism. They teach us to look with respect at every aspect of nature - from the microscopic bacteria and ants to animals and plants, and even the snow covered mountains. If you have seen individuals in India offering flour or grains to ants and snakes and monks going around with a mask for their mouths, you can understand the vitality of this link between Indic religions and nature.

In the Indian mythology, Ganesha is the son of Shiva and Parvati, born while his father is away. Many years later, one day Shiva comes back home and is stopped by Ganesha, who does not know him and is guarding the door because his mother is taking bath. Angry, Shiva cuts his head. Later when he realises his mistake, it is too late, some animal has eaten his son's head. So Shiva sends his men to look for another head, and his men bring back the head of a baby elephant which is put on the boy's torso. This is how Ganesha's elephant head is explained in the mythology.

Ganesha statue, Ram temple, Nasik, India - Image by S. Deepak


Transplanting An Animal Head

Some persons take the Ganesha story literally and believe that ancient Indians knew how to transplant an animal head on that of a human being. Even if it was possible to sew and transplant an animal head on a human body, and even if it was possible to avoid the inter-species transplant rejection, no real elephant's head, not even a baby elephant head, can fit the human body, unless we are talking of elephant-sized giant men from Gulliver's Travels. Thus, this story is only a story.

However, ancient Indians did develop surgical skills almost 2000 years ago, which were probably unique in the world at that time. Some of those techniques are still used in modern surgery. I wonder if the story of one such surgical operation could have given birth to the Ganesha myth. Let me explain.

Surgery in Ancient India

Mentions of surgery are found from Rigveda onwards in different texts of Hinduism and some of the well known ancient surgeons mentioned in these texts include Ashwini Kumaras, Chavana, Dhanvantari, Atereya Agnivesh and Sushruta. Sushruta from 600 BCE is called the father of Indian surgery, and his book known as Sushruta Samhita contains indications regarding cosmetic, plastic, and dental surgery ("Sandhan Karma").

Dr. Vibha Singh in an article published in the Journal of Maxillofacial Surgery in 2017 had written about it:

The ancient surgical science was known as Shalya Tantra. Shalya means broken arrow or a sharp part of a weapon and Tantra means maneuver. Shalya Tantra embraces all processes, aiming at the removal of factors responsible for producing pain or misery to the body or mind. Since warfare was common then, the injuries sustained led to the development of surgery as refined scientific skill ...Complicated surgeries such as cesarean, cataract, artificial limb, fractures, urinary stones plastic surgery, and procedures including per- and post-operative treatment along with complications written in Sushrutaa Samhita, which is considered to be a part of Atharva Veda, are surprisingly applicable even in the present time ...Even today, rhinoplasty described by Shushruta in 600 BC is referred to as the Indian flap and he is known as the originator of plastic surgery. Besides trauma involving general surgery, Sushruta gives an in-depth account and a description of the treatment of 12 varieties of fracture and six types of dislocation. This continues to spellbind orthopedic surgeons even today. He mentions the principles of traction, manipulation, apposition, stabilization, and postoperative physiotherapy ...

Knowledge about surgery travelled from India to the Arab World in the 8th CE and then to Europe. Prof. Thamburaj in his book Textbook of Contemporary Neurosurgery wrote that Sushruta Samhita was translated into Arabic as 'Kitab Shah Shun al–Hindi' and 'Kitab–I–Susurud'. There were Latin and German translations of this text in early 19th century but I think that there must have other translations of this text in the past and the knowledge about the Indian techniques had reached Europe much earlier.

Dr Frank McDowell in his 1977 book on Plastic Surgery had written: "Through all of Sushruta's flowery language, incantations and irrelevancies, there shines the unmistakable picture of a great surgeon. Undaunted by his failures and unimpressed by his successes, he sought the truth unceasingly and passed it on to those who followed. He attacked diseases and deformities definatively, with reasoned and logical methods. When the path did not exist, he made one."

The Skin Grafting Technique from India

Skin grafts are needed when the skin is destroyed, such as in burn and crush injuries. Broadly, there are two kinds of skin grafts - a partial skin graft and a full skin graft. The full skin grafts were described in Sushruta Samhita.

When wounds are big or deeper, and a thin strip of skin is not enough, we need a graft with the full depth of the skin and underlying tissues including blood vessels and nerves. For this, the surgeons cut a piece of full skin tissue from three sides, usually from abdomen, arms or thighs, while making sure that it remains attached on the 4th side to the original part of the body, from where it can continue to receive blood. This skin flap is used to cover the wound. This means, the surgeon needs to bring together the wound to the body part which is going to donate the skin, and they need to stay together for some weeks, till the grafted skin starts getting blood from the underlying tissues. Once the grafted skin is well fixed to the new area, the flap can be cut at the base and two parts can be separated.

The Origins of Ganesha Myth

Is it possible that the Ganesha myth started from a surgery in ancient India? Lets suppose that there was a young boy who was a priest at a Shiva or Shakti temple and he was attacked by someone who wanted to loot the temple. He was able to protect the temple but his nose was cut during the fight. He was operated by a surgeon who took a full skin flap from his upper arm and used it to construct a nose for him. After the operation, he was forced to keep his arm close to his face with his forearm hanging in front of his face like an elephant's trunk for a few weeks or months. Suppose, someone called him the boy with the elephant's head and over time, it gave rise to the Ganesha story?

Hinudism has a strong traditions of an oral culture, where old stories are made into songs, adapted to the local context and passed across generations. Over centuries, such a story could have become the Ganesha's mythical story and the sages incorporated that story in a sacred book, explaining him to be Shiva and Parvati's son.

Conclusions

Hinduism is a living tradition that has roots going back to antiquity. This living tradition is incredibly complex, where each story has innumerable versions, and some of them can be contradictory. Over centuries, stories which can have deep metaphorical meanings become widespread and find a place in one of its sacred texts.

Ganesha painting, Haridwar, India - Image by S. Deepak


My considerations about the origins of the Ganesha story are just speculations and can't be taken as truth. They build a story around the surgical skills about skin-grafting in ancient India. There is no way to prove this story and any way, that is not the purpose of this post.

Additional notes about this surgery in India are given below:  I think that this additional information is important because it shows that Ayurvedic operations based on the ancient techniques described in old books of Sushruta Samhita and Charaka Samhita, were being practiced in India in 18th century and were taken to west much more recently than has been claimed.

Additional Notes, 11 August 2020 (From @trueindologyorg on Instagram):





The above is the picture of world's first known modern plastic surgery. It is also the picture of world's first known modern nose job. It was performed by a traditional Indian surgeon named Kumar. The person in this picture was known as Cowasji. He was a Maratha bullock driver. He had been imprisoned by Tipu Sultan and his nose was cut off in prison. His nose was later restored by a traditional Surgeon named Kumar using "ancient Indian methods" in 1794 CE.

A Britisher named Lucas observed in action the traditional Indian surgery of Cowasji and documented every detail of this operation. This picture was a British portrait of Cowasji AFTER Rhinoplasty (c. 1795 CE). At that time, the Europeans lacked the scientific knowledge and expertise needed to perform plastic surgery. They were greatly intrigued by this method and found it was commonly performed in India. They also noted how Susruta Samhita described this procedure of Rhinoplasty in detail. These details were then accessed by a scientist named Joseph Constantine Carpue. Using these techniques, he performed world's "first" modern Rhinoplasty 20 years later.

Joseph Constantine Carpue is widely known as the father of Plastic Surgery. But in his book "An account of two successful operations" , he acknowledges that it was performed by "Indians from time immemorial". He learnt it through his friends who "copied from Hindoo practitioners" in his own words. Nasal reconstructions had been practiced as a relatively routine procedure in India for centuries. The procedures are described in two well-known early Indian medical works like the Suśruta Samhitā. By the nineteenth century, the technique had been handed down through families.

Traditional Indian sources recommend that Kumbhakaras (potters) perform the surgery owing to their skill. They performed it till 18th century. Source: "An account of two successful operations " by Joseph Constantine Carpue. Image source: https://blogs.bl.uk/science/2016/10/britains- first-nose-job.html

*****
#surgery #medicine #ayurveda #ancientindia #ganesha #hinduism

Thursday, 20 February 2020

Influence of Parasites on Behaviour

Sometimes we think that we have understood something, then scientists comes up with new insights, which force us to rethink about that understanding. For example, over the past decade, insights about the gut bacteria which constitute our microbiome and might shape different aspects of our lives, from obesity to depression, have opened a new areas of scientific enquiry. The discovery of a "new body organ", the interstitial space, is another emerging area of research and understanding, which might have surprises waiting for us. Kathleen McAuliffe's book about parasites and how they might affect human behaviour relates partly to the role of gut bacteria, but has a wider scope. It did manage to force me to reflect about issues that I had not thought before.

Book-Cover: This is your brain on parasites

About 50 years ago, when I had joined medical college in India, I used to think that almost all the things that could have have been discovered about human body and diseases had already been discovered. I imagined that technology might help us improve some things, like diagnosing some difficult to diagnose conditions, but I had no idea that in these 50 years scientific knowledge about some aspects of human body, such as genetics, was going to change so drastically. That is why I love reading books which give an understanding about human body and its influence on the changing practice of medicine.

McAuliff's book has a strange title, "This is Your Brain On Parasites", which does not sound very interesting, but its subtitle explains it better - "How tiny creatures manipulate our behaviour and shape society". This post is about this book, which I would divide into 2 parts - the first part is about different parasites which infest worms and insects and, change their behaviour; the second part is about humans. The latter is more speculative, it wonders how parasites and fear of illness might be influencing our sense of disgust and our behaviour towards "outsiders".

Parasites in Other Life Forms

In the first part of the book, McAuliff talks about researchers who have spent all their lives following the life cycle of a parasite and the surprising things they have discovered. McAuliff explains that searching for these stories was what led her to writing this book:The impetus for this book was a discovery on the Internet. I’m a science journalist and one day while foraging for interesting topics to write about I stumbled across information about a single-celled parasite that targets the brains of rats. By tinkering with the rodent’s neural circuits—exactly how is still a matter of fervid study — the invader transforms the animal’s deep innate fear of cats into an attraction, thus luring it straight into the jaws of its chief predator. This is a felicitous outcome not only for the cat but also, I was stunned to learn, for the parasite. It turns out the feline gut is exactly where the organism needs to be to complete the next stage of its reproductive cycle ... As I continued reading, more surprising news greeted me: The microscopic organism is a common inhabitant of the human brain because cats can transmit it to us when we come in contact with their feces. Perhaps the parasite was meddling with our brains too, speculated a Stanford neuroscientist associated with the research.
The stories of parasites entering the bodies of their hosts and changing their behaviour to suit their own desires, are like the stories of ghouls and spirits taking over and turning living beings into zombies - fascinating and frightening. At the same time, this part of the book explains the different obstacles these scientists had to overcome in their single-minded passion about one worm or one insect, over periods lasting decades. It is a pity that most of their names remain in obscurity.

For example, there is the story of the scientist Janice Moore who got interested in the life-cycle of a tapeworm and studied how it passes part of its beginning life in the ants and then it makes the ants go crazy, so that they climb on the the tip of grass and wriggled in such a way to attract the sheep to come and eat those grass-blades. Thus the worm reaches the brain of the sheep, needed for the next phase of its life-cycle.

From crazy fishes flipping on their belly on the surface of water so that they were eaten by some cranes to cockroaches meekly following the wasps to their nests so that wasp could deposit its eggs on its tummy and when wasp-babies come out they could have fresh cockroach meat, the stories are incredibly interesting and morbid.

They also made me think about some flamboyant persons with attention-seeking behaviours and wonder if they might have some worms in their brains? We do have some popular ways of sayings in Hindi in India, such as "Iske dimaag mein keeda laga hai" (His/her brain has got a worm), which sounds very similar to these stories.

Parasites and Human Behaviour

In this part of the book, McAuliff focuses on human psycho-pathology. These are more of hypothesis rather than scientific studies, about how the bacteria living in our bodies might be influencing our behaviour (though these bacteria are not really parasites, rather these are symbiotic organisms, as they get nutrition from us but they also provide benefits to us such as vitamins).

Cruickshank, in her review of McAuliff's book in New Scientist has critiqued this part:

Oblivious, McAuliffe skips into attention-grabbing territory armed with only the flimsiest of evidence. She claims, for example, that infection makes us more sociable and sexually voracious as the parasite seeks to infect others. This is based on a study that followed people given a flu shot (it being unethical to give people actual influenza). The subjects’ increased sociability might have been due to viral manipulation, but for my money it’s more likely they were simply feeling confident about being protected from infection.

McAuliff may not have evidence for most of the things she writes in this part of the book, but in terms of human psycho-pathology, they do raise some interesting hypothesis.

Conclusions

Studying the influence of bacteria and parasites on human behaviour is a field in expansion and new discoveries are already being made, which have many practical implications. For example, understanding how the malaria parasite influences mosquito behaviour and how it changes human physiology, can help us in diagnosing it and fighting against an infection which kills hundreds of thousands of persons each year. Some months ago, I had seen a TED video by James Logan about how dogs may be able to identify persons with malaria parasite, because the parasite makes our bodies secrete a chemical in our sweat, which attracts uninfected mosquitoes to come and bite us, and dogs can be trained to identify the persons with this chemical in their sweat.

I found this book hugely interesting and read it in a span of a few days, almost like a thriller. It is true that in terms of influence of micro-organisms and parasites on human behaviour, this book is speculative. However, it might influence young researchers to study these areas and see if such infections/infestations can be implicated in the causation of conditions which are yet not properly understood, like schizophrenia and Alzheimer disease.

*****

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