Artificial Intelligence Finds Missing Ghost Ancestor of Humans

human ancient skull

Our ancestry as a species is intricate and convoluted. We know that Denisovans, Neanderthals, and the other iterations of our hominin ancestors interbred and evolved over hundreds of thousands of years. But while anthropologists have done their best to map out this complicated lineage, we’ve now reached a point in our evolution that machines can map our genealogy better than we can. Such was the case when a machine learning algorithm applied to our DNA roadmap found a new ancestor we didn’t even know existed.

According to a study published in Nature Communications, scientists fed DNA data from fossilized bones and modern humans into an A.I. algorithm that computed thousands of timelines to map out the possible evolutionary pathways based on what we know – or what we think we know – about our ancestors migrations, diasporas, and interbreeding to tell us if we were missing anything.

It turns out we were…

The new study found that a missing, archaic “ghost” ancestor played a significant role in the development of the human species, helping to propel us from primitive hominins to the highly intelligent beings we are today.

This ancestor was likely a hybrid of Neanderthals and the Denisovans – the hominin ancestor discovered in 2010, that five percent of modern humans can still directly trace their genealogy through.

And though the study’s authors are referring to this hominin hybrid as a “ghost” population, they also believe there might be fossil evidence of it found in the bones of a 90,000-year-old specimen of a teenage girl discovered in Siberia’s Denisova cave – the location where the original Denisovan fossils were found.

The discovery of the Denisovans has presented itself as one of the most profound and baffling finds for archeologists within the past decade as their fossil remains showed they existed for millennia alongside our other ancestors. Not to mention they appear to have been massive in comparison to other hominin species.

And by massive, they mean that a Denisovan wisdom tooth found in the cave was originally mistaken for that of a bear’s. And though wisdom teeth can vary in size, the anthropologist studying the specimen, Bence Viola, told National Geographic, “large teeth with massive roots would probably require massive jaws.”

Who were these gigantic Denisovans whom we know so little about, and even more baffling, what did their hybrid progeny with Neanderthal’s look like? These paradigm-shifting discoveries only add to the fact that we still have so much more to learn about our species’ history.

 

For more on the strange discovery of the gigantic Denisovans check out this episode of Ancient Civilizations :



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Forget the Flu; Mark Gasson Fights Infection From Computer Virus

As the age of technology wears on, more and more people have been considering implanting themselves and their pets with chips that store information and communicate various details to other receptive technology. But skeptics wonder if it’s naive of people to consider such trends as simple and safe. What happens, for instance, when your information is hacked, when there’s a glitch in the technology, or when there chip catches a computer virus?

In 2009, Dr. Mark Gasson tested these reservations were tested at the University of Reading, by having an RFID chip implanted into his hand. Then, quite intentionally, he infected himself with a computer virus.

RFID Insertion

RFID stands for radio frequency identification and work like barcodes within a type of tracking system, transmitting information to a reader through radio waves. Although their original use was for merchandise, people have begun inserting them into their pets and even themselves.

If this sounds a little like the premise of a dystopian sci-fi where the protagonist is running from an authoritarian force that can track him anywhere, you’re not far off. The chips have already been used to locate missing people — for better or worse. On the plus side, Alzheimer’s patients who’ve wandered far from home can be found and returned, and victims of kidnapping incidents are more likely to be rescued.

However, the problem with this marriage between living forms and technology — what one might refer to as transhumanism — surfaces when, say, stalkers or criminals have the technology to find you, wherever you are. Their victims become easy to locate and target.

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