How Stone Age humans unlocked the glucose in plants

Early cave paintings of hunting scenes may give the impression our Stone Age ancestors lived mainly on chunks of meat, but plants—and the ability to unlock the glucose inside—were just as key to their survival.

Human-like walking mechanics evolved before the genus Homo

Ever since scientists realized that humans evolved from a succession of primate ancestors, the public imagination has been focused on the inflection point when those ancestors switched from ape-like shuffling to walking upright ...

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