Scientists have deciphered as many as 66 chimpanzee gestures, which they say are used intentionally by the apes and which provide a potential link with the early development of the human language. From simple requests to complex social negotiation, the chimps were found to use a number of hand and body gestures to get their intentions across. Eighty wild chimpanzees in the Budongo rainforest, Uganda, were analysed in an attempt to interpret what the ground slaps, foot stomps and arm raises really mean. Researchers from St Andrew’s University say that they have shown in unprecedented detail what our closest living relatives are trying to convey, after looking at over 4,500 gestures using secret recordings. More via The Independent.