In fact, over 85% of the occurrences of bipedalism that were observed took place when the apes were in the trees. "Our study suggests that the retreat of forests in the late Miocene-Pliocene era ...

One of the most fascinating periods in the evolution of the human lineage is the appearance of the first ancestors capable of ...

As the African landscape shifted gradually from dense forests toward large patches of savannah, early hominids found their food supplies waning, leading them to descend from the trees and become ...

Daniel E. Lieberman is in the Department of Human Evolutionary Biology, Harvard University, Cambridge, Massachusetts 02138, USA. Hominin footprints at Laetoli reveal a walk on the wild side The ulna ...

One of the biggest questions in human evolution asks why humans became habitually bipedal about 7 million years ago. Most of our primate cousins do well walking quadrupedally and switch to two legs ...

Why do we walk on two legs? If you asked a roomful of anthropologists, you'd likely not get the same answer from any two of them. Specialists cite everything from changing landscapes to needing to ...