Scientists have struggled for centuries to pinpoint the qualities that distinguish humans from the millions of other animal species with which we share the vast majority of our DNA. Now we explore those traits once thought to be uniquely human to discover their evolutionary roots.
Scientists have struggled for centuries to pinpoint the qualities that distinguish humans from the millions of other animal species with which we share the vast majority of our DNA. Now we explore those traits once thought to be uniquely human to discover their evolutionary roots.
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