Scientists assemble largest-ever family tree for primates

Scientists at the University of Chicago and the University of Leeds have assembled the largest and most comprehensive family tree of the order primates, including both living and extinct species.

Clouds played an important role in the history of climate

Were Earth's oceans completely covered by ice during the Cryogenian period, about 700 million years ago, or was there an ice-free belt of open water around the equator where sponges and other forms of life could survive? ...

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