People are still evolving. Evolution is adaption to existing conditions and is basically impossible to stop. In fact dispute billions of years of multicellular evolution the cells 'in your body' and given time will develop into cancer, then portable cancer inside your body, and given the right conditions portable cancer outside your body.

PS: Humans closet genetic relative is a single celled organism whose species started from cultures of a woman's cancer cells. http://en.wikipedia.org/wiki/HeLa Tasmanian devils suffer from a similar disease of more natural oragin. http://animals.nationalgeographic.com/animals/mammals/tasman...