LifeMystery of why humans walk upright may be explained by surprise fossil We thought that walking on all fours like a gorilla is more primitive than walking on two legs as humans do. But new fossils suggest even very ancient apes walked upright ¿ìè¶ÌÊÓÆµ
LifeDon't Miss: African origins, deadly mozzies and meeting of minds This week, listen to a founder of Out-of-Africa theory, read about our deadliest enemy, the mosquito, and explore the future of human and robot minds Culture