Humans May Have Started Walking On Two Legs While Living In Trees
A surprising new study based on chimpanzee behavior suggests trees played an “essential” role in the evolution of bipedalism. GUERCHOM NDEBO/AFP via Getty ImagesThe study’s authors observed the movements of chimpanzees to understand how early humans might have developed bipedalism. Walking on two legs is one of the defining features of mankind, and researchers have long assumed that our ancestors developed bipedalism while traversing grasslands. But new research suggests that early humans may have started walking on two legs while still living in trees....