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
DefinitionBelly button lint As an exercise in scientific navel-gazing, Georg Steinhauser’s experiment takes some beating. Starting in 2005, Steinhauser – then a chemist at the Vienna University of Technology – collected pieces of belly-button fluff from his navel and recorded their colour and weight