New techniques c ancient DNA analyzes provide increasingly painful details of prehistory, including some of the latest scientific discoveries in the last week.
I’m Katie Hunt, replacing Ashley Strickland, who is on vacation.
In a new study, scientists sequenced the genomes of 13 bodies and found that they are the descendants of Ice Age hunter-gatherers.
While this population was genetically isolated, the clothing of the mummies and the food in their unusual graves indicated that they had collaborated extensively with other groups living in the region at the same time. But the boats in which they were buried still remain a mystery.
The climate has changed
Ancient DNA that contains the secrets of the past is not just in old bones.
All animals, including humans, excrete genetic material when they lose hair, remove dead skin cells, pee, poop and bleed. This genetic material is poured into the soil, where it can remain for tens if not hundreds of thousands of years – when the conditions are right.
To trace the whereabouts of woolly mammoths and other giant creatures from the Ice Age, scientists took soil samples from locations across the Arctic, extracting DNA from permafrost and sediment. in an ambitious study.
We are currently they know more than 4,000 of these exoplanets. However, all the identified exoplanets revolve within the Milky Way, our place galaxies and are less than 3000 light-years away.
Now, NASA’s Chandra X-ray Observatory may have detected signs that the first planet has traversed the star off the Milky Way. A possible planet located in the Whirlpool galaxy would be about 28 million light-years away.
This is perhaps the most unusually cute animal you’ve never heard of. Dicinodonts lived about 270 million to 201 million years ago, before the rise of the dinosaurs. These creatures had the size of a rat or elephant-like head in the shape of a turtle and tusks protruding from the upper jaw.
Surprisingly, there was not a single moment in their evolutionary history when tusks evolved, they learned, but the variants had a common combination of traits found in today’s mammals.
The wild kingdom
If you’ve ever caught Queen’s song “We Will Rock You,” you have more in common with lemurs in Madagascar than you think.
Finding this out wasn’t easy – researchers followed the indri for years to record their recordings of them singing in rain forest canopies. The results could further our understanding of the origin of rhythmic abilities.
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