Study: Evolutionary Changes in Voice Box May Have Led to Human Speech - VOA Learning English

Researchers say changes in the voice box of nonhuman primates over time may have led humans to develop the ability to speak.

Scientists say changes in the voice box of nonhuman primates over time may have led to human speech. The researchers said they examined the voice box, also known as the larynx, in 43 different speci… [+4906 chars]

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