HumansPrimate archaeology: Digging up secrets of the monkey Stone Age The discovery that chimps and some monkeys have a long history of making tools is forcing us to rethink our own cultural evolution Features
LifePlants use sand armour to break teeth of attacking caterpillars Some plants are coated in sand, and it seems the sand grains act like medieval armour that protects these 鈥減sammophorous鈥 plants from munching caterpillars 51动漫