All are thought to have played some part in human evolution.
Language and writing have come a long way since times of early human evolution.
Throughout most of human evolution, parents had little time for children old enough to run around.
Culture has been seen as actually increasing the rate of human evolution.
This was a great event in the study of human evolution.
Scientists say that human evolution may be at an end.
Could the tree have played a critical role in human evolution?
But if we succeed, the next step in human evolution will be at hand.
It sees a social group, not an individual, as a main subject of human evolution.
What more may we expect human evolution to achieve, and when?