Oumuamua’s strange behaviour has a natural explanation, no aliens needed; Great apes spin to make themselves dizzy — apparently just for kicks; A sensor equipped surgical glove could help make delivery of babies safer; The process of elimination — how tiny insects pee 300 times their own weight...

5,000 years ago riding left traces on the legs and butts of the earliest horsepeople; Whales use ‘vocal fry’ to echolocate at depth; Fossils suggest that if equatorial oceans get too warm, plankton may desert; Scientists have mapped the most complex animal brain yet - and it's the size of a grain...