Losing parts of our voice box may have helped humans evolve to speak

Unlike people, 43 species of monkeys and apes are known to have so-called vocal membranes, which may prevent them from having precise voice control

Losing parts of our voice box may have helped humans evolve to speak
Unlike people, 43 species of monkeys and apes are known to have so-called vocal membranes, which may prevent them from having precise voice control