Explaining how science can help us dig up the past is Lawrence Owens, who uses teeth and bones to uncover the life and sometimes gruesome death of mummies in Peru and Bolivia, and Harriet Allen describes how the pollen record and layers of lake sedimentation can reveal what the environment was like 10 000 years ago. Also on the show, Nick Brooks talks about how climate change in the Sahara may have given rise to complex human societies, and taking us back even further in human evolution is Clive Finlayson, who discusses how a new fossil discovery shows that Neanderthals were alive and kicking... Like this podcast? Please help us by supporting the Naked Scientists