But some experts want more evidence.
A 1.5 million-year-old vertebra from an extinct human species unearthed in Israel suggests that ancient humans may have migrated from Africa in multiple waves, a new study finds.
Although modern humans, Homo sapiens, are now the only surviving members of the human family tree, other human species once roamed Earth. Prior work revealed that long before modern humans made their way out of Africa as early as about 270,000 years ago, now-extinct human species had already migrated from Africa to Eurasia by at least 1.8 million years ago, during the early parts of the Pleistocene (2.6 million to 11,700 years ago), the epoch that included the last ice age.
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