The dawn of speech was millions of years earlier than previously thought
For more than fifty years, scientists have thought that the origin of speech depended on one pivotal moment 200,000 years ago. That’s when the human larynx descended, elongating the vocal tract. Until now, this physiological innovation was seen as the root of humans’ unique ability to communicate verbally with one another. But a new paper suggests that estimate may be off — by a couple of million years.
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