This week's dirt: new study suggests a warmer, greener Antarctica 20 million years ago, gorilla populations start to rebound after 2004 ebola outbreak, sponge DNA may give us new insight into our central nervous system, new research shows that goat moms know their kids' voices, and more.
In order to stay alive in the Kenyan bush, Toki must be able to hunt by himself and avoid danger. Can you help him?
Learn how the anatomy of a cheetah makes it the fastest land animal in this interactive feature.
NATURE goes behind the scenes of The Cheetah Orphans in an interview with filmmaker Simon King.
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