Maybe dad wasn't joking after all

Maybe dad wasn't joking after allI remember watching a football game on TV with my dad when I was about 8. There was a huge, hairy guy and my dad told me, "one of his grandfathers was a gorilla." I wasn't sure whether to believe him but he finally told me he was just teasing.But after reading Humans, chimps may have bred after split, I think maybe he was serious.

Boston scientists released a provocative report yesterday that challenges the timeline of human evolution and suggests that human ancestors bred with chimpanzee ancestors long after they had initially separated into two species.