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'Biological time capsules': How DNA from cave dirt is revealing clues about early humans and Neanderthals
The oldest sediment DNA discovered so far comes from Greenland and is 2 million years old.
Morning Overview on MSN
Cave dirt DNA is rewriting early human and Neanderthal history
In the last decade, archaeologists have learned to read the genetic traces that ancient humans and Neanderthals left not only ...
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