Ice Age humans left their footprints across what is now Willandra Lakes in southeastern Australia.

How Climate Change May Have Shaped Human Evolution

Evidence is building that past climate change may have forged some of the defining traits of humanity

A coffee roaster does a taste test in Los Angeles.

Five Coffee Mysteries the Bean’s Genes May Crack

The newly sequenced coffee genome might reveal the origins of caffeine and pave the way for better-tasting, healthier brews

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