Wednesday, July 1, 2020

World's largest graveyard of Dinosaurs found in South Africa

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Nikhita Gautam

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World's largest graveyard of Dinosaurs found in South Africa

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Global Views 360

Publication Date

July 1, 2020

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‘African dinosaurs’ exhibit at the Iziko South African Museum in Cape Town

‘African dinosaurs’ exhibit at the Iziko South African Museum in Cape Town | Source: Bruce Anderson via Wikimedia

In a village in the eastern cape of South Africa lies one of the most significant dinosaur sites ever found in the world. The site was discovered when a shepherd, Dumangwe Thyobeka found a large bone on his way to his great-grandparents’ graves, in 2015. He then took the bones to a local dinosaur enthusiast, James Rhalene. Commenting on this discovery " Mr. Rhalene said, "Growing up we were told dinosaurs were a myth, I thought they were only tales our grandparents would tell around the fire at story time", and It wasn't until reading some books that I started to believe they may be real. I've been looking into the existence of dinosaurs since 1982. He added, "You can imagine my excitement at being part of this and discovering them in my own backyard. I am so proud. Books will be written about our small village; the world will come to know of us through this discovery.”

These bones are more than 200 million years old, of around the end of the Triassic era and the beginning of the Jurassic one. When the village elder, Sginyane Ralane came to know about the discovery, he reached out to universities in South Africa for looking into it. The news eventually reached Prof. Jonah Choiniere from the University of Witwatersrand in Johannesburg, and in 2018 Jonah and his colleagues started excavating the site. “It has been one of those places where you sometimes find yourself literally tripping over a dinosaur bone. There are very few other sites I've had the chance to work where we have this richness of fossils.” says Prof Paul Barett, a dinosaur expert at The Natural History Museum, UK, after he joined the team.

A reason why this area is abundant in fossils, Natural History Museum explains, is because of the ancient river systems in the area. The area is arid for most of the year now, and the rivers flow only seasonally. However, in the ancient times, there were vast river systems flowing year-round in the region, with wide, shallow rivers which would consequently form a layer of rock 210 million years old which is up to 500 meters thick in some regions. These rivers supported diverse wildlife, including ancestors of crocodiles, possibly those of turtles and mammals and fish, amphibians and reptile-like animals. The existence of such large rivers meant that dead animals nearby would be buried in sediment before they decomposed.  

This discovery is scientifically important for a number of reasons; the era from which these bones are found is a boundary in which a mass extinction occurred. Prof. Jonah is trying to understand how the animals from before that extinction survived and how they flourished after. In the Triassic era, there were multiple dominating animals, like the crocodiles, big mammal-like animals and dinosaurs. In the Jurassic era, however, the dinosaurs are clearly dominating. Why this happened is unclear, and the rocks and fossils from this site might help with that. There were also other animals along with dinosaurs in this site which make it noteworthy. Of the animals found, there were rauisuchians, which relate to modern-day crocodiles, and were dominant on land during the Triassic. The team also found cyclodonts and dicyclodonts, where the cyclodonts are the early ancestors to all mammals, and dicyclodonts are an even earlier branch of the mammalian family tree.

All of these have a significant impact on the community too; the team signed a memorandum of understanding with the local government with huge. After the signing, local officials visited the site at Qhemega. The team has been trying to use the heavy machinery they had brought for moving fossils for improving access in and to the village. They are also developing a curriculum in high schools to include topics about fossil sites and to add geography to the curriculum, to train the younger generation about the mapping used in excavation and in many other scientific fields especially relevant in the mineral-resource rich South Africa.

So far, this site has only provided benefits for everyone involved; new discoveries and confirming data for the scientific community, and economic access, increased opportunities and a matter for pride for the local community.

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February 4, 2021 4:54 PM

Neuralink: Elon Musk’s quest to achieve a symbiosis of Brain and Artificial Intelligence

The memory of using YouTube for the first time is still clearly etched in my mind. One day we heard the sound of a song coming from the other room, startled by the noise, my brother and I went to investigate. We saw our father surfing in the wondrous world of YouTube where you could play any song without having to buy CDs anymore. It just bewildered us.

What Elon Musk claimed recently shows the distance technology has covered since then. He made headlines recently claiming that  his latest innovation Neuralink,will make it possible to, streaming music directly into our mind. Yes, the CEO of Tesla and SpaceX is back with the new episode of ‘Science fiction turned into reality.”

Musk describes Neuralink as a medium for a symbiosis of Brain with Artificial intelligence. The human brain is essentially an astonishingly powerful supercomputer which runs on power equivalent to the one used in a 20Watt electric bulb.

What Musk wants to do through Neuralink is to fit a tiny chip inside our brain, which can download all the processed information which is travelling from neuron to neuron. This chip with some threads that have the diameter of about tenth of human hair will have the potential to record and stimulate neurons across different brain areas. A Neuralink designed robot will fit electrodes containing threads using sewing technology into the brain. The technology is wireless, so at least you do not have to worry about wires hanging from your head.

Neuralink, launched as a Medical enterprise in 2016, aims to fix blindness, motor abilities, speech and much more. Although the purpose seems benevolent at first glance, we are talking about Elon Musk, the real-world Iron Man. Elon is anxious and fears Artificial Intelligence taking over Humans. He wants us to develop our intelligence potential by accessing our action potential, so that AI does not turn on its creators. For that sole reason (plus the monetization), the Brain-Machine Interface of Neuralink will be accessible to everyone.

Of course, every invention is at the centre of the doubt initially. The case of Neuralink is fascinating and problematic at times and is not different than any other path breaking innovation. Neuralink is going to change the course of human history and will literally turn us into Cyborgs and thus, causes cynicism among a large section of scientists fraternity.

The biggest and fundamental problem with the Neuralink is that it seeks to reach symbiosis of AI and the brain, an enigmatic organ about which we barely know anything. Those who support it argue that we do not need to understand how the brain works to develop Artificial intelligence while the sceptics say that while integrating the functions of Brain and AI, it is crucial to discern nature with precision. David Eagleman, in his book ‘Brain’, claims that a lot of what we see around is not even the whole picture; it is a mere description that Brain paints for us. A simple task as perception is not clearly defined yet. We still have the entire sea of discoveries to be made when it comes to neuroscience.

The other concern with Neuralink is the possible hacking of Neural networks. Though Neuralink technology is heavily dependent on Bluetooth which is supposed to be secure, there are threats from the tech like the Trojan Virus. The implications of hacking are beyond terrible and sound like an evil hacker-robot-zombie apocalypse depicted in sci-fi movies.

Another aspect of Neuralink which needs to be looked into is the classic social divide of haves and have nots. The surgery, although portrayed something as simple as a LASIK surgery, may not be affordable for everyone in the society. Are we looking at a new kind of discrimination in future? Is it even ethical and feasible to put a chip inside the brains of the entire human race? Every question leads to a new question.

It is an alien concept and thus, a scary one. It can help us learn a lot about the brain itself but will have huge repercussions. Figuring out the answers to the simple yet significant problems should probably be the next step for the Neuralink team.

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