And in doing so, they discovered an extraordinary affinity with our extended family. Especially with a great ape with who we share almost 99% of our genes, the Chimpanzee. He was completely asleep just then, so you just, just rocking to the side as if he might just fall off the branch, you could see his lips were twitching like he was in a deep dream, that was really beautiful. Chimpanzees are our closest relatives. Justine Evans spent almost a month with them in the forest of Guinea to film their use of tools. The chimps have disappeared off down there,
