In a study of chimpanzee and monkey anatomy, primate arms provide hints about how our ancestors got to the ground in one piece. By Miriam Fauzia Millions of years ago, a simian ancestor of humanity ...

Humans’ advanced ability to throw things may have started with having evolved shoulders and elbows that stopped our ancestors from falling as they climbed down trees. Bulkier and heavier than agile ...

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The plan was simple: enjoy a sunny day climbing trees with baby monkeys. But their fearless antics and boundless energy took the adventure in an unexpected direction.