When you hear the words “reptilian” or “cold-blooded”, the first thing that comes to might be a miserly politician or an uncaring boss — in other words, probably not an actual crocodile or lizard. That’s because for decades, reptiles have been characterized as cold, unfeeling, and even primitive creatures. But scientists agree that reptiles aren’t emotionless — they’re misunderstood. Extensive research has shown that reptiles experience a wide range of emotions, and that the ...read more
In 2022, we reported the DNA sequences of 33 medieval people buried in a Jewish cemetery in Germany. Not long after we made the data publicly available, people started comparing their own DNA with that of the 14th-century German Jews, finding many “matches.” These medieval individuals had DNA fragments shared with thousands of people who have uploaded their DNA sequence to an online database, the same way you share DNA fragments with your relatives.But what type of a relationship with a medi ...read more
Deep in the rainforests and eucalyptus woodlands of Australia and New Guinea lives an enigmatic creature known as the striped possum. Quiet, cute, and nocturnal, its favorite activity is boring holes into the trees and using its elongated fingers to extract ants and termites from the trunks within. While the striped possum is hard to spot in the wilds of Australia, it’s much more common in the lowlands of New Guinea. The Striped Possum: A Curious CreatureThe striped possum is less than a foot ...read more
Were Stone Age humans the first geologists?Humans living in what is now South Africa 70,000 years ago possessed a surprisingly sophisticated understanding of the various kinds of rock that made up their world, indicates a new study published in the Proceedings of the National Academy of Sciences of the United States of America.Not only did hunter-gatherers of the time know how to make finely crafted stone tools, but they understood exactly which rocks would yield the best combinations of ease of ...read more
In the age of air travel, the Calanais Standing Stones (or Callanish, in the anglicized spelling) are not so hard to get to, and yet, the site feels remote.The ancient stone megaliths are perched at the edge of the village that shares their name, on the west coast of the Isle of Lewis, part of the Outer Hebrides chain of islands that sits off the northwestern coast of Scotland. Having read of Calanais’ status as the “Stonehenge of the North,” I was determined to make the journey; it had be ...read more