
Ice Age
2002
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.
2002
1968
1995
2022
2001
2015
1996
1979
2015
2019
2023
2020
2006
2019
2023
2019
1995
2019
2018