Australopithecus Afarensis better known as Lucy is believed to have walked the Earth 3.2 million years ago in Africa, and scientists based their model on a skeleton discovered in Ethiopia in 1974.
Researchers have long argued over when our ancestors 'came down out of the trees', with arguments centering around Lucy, and whether her feet allowed her to climb as well as walk.
Now, scientists studying the feet of Ugandan hunters who climb for honey say they believe Lucy may have spent time in both the trees and on the ground, the 'Daily Mail' reported.
Many researchers view terrestrial bipedalism, the ability to walk on two legs on the ground, as the hallmark of 'humanness' as most of our living primate relatives
