Research tracks 66 million years of mammalian diversity

When trying to understand the present, it's helpful to look to history. New research from the University of Nebraska–Lincoln examined the fossil record going back 66 million years and tracked changes to mammalian ecosystems ...

3D genome extracted from 'freeze-dried' woolly mammoth

About 52,000 years ago, the skinned hide of a Siberian woolly mammoth was exposed to conditions so frigid that it spontaneously freeze-dried, locking its DNA fragments into place.

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