- Neanderthals have long been seen as uber-masculine hunks, at least compared with their lightweight human cousins, with whom they competed for food, territory, and mates.
- Neanderthal fossils happened to be poorly preserved or contaminated with bacteria.
- Not only did it give modern humans Neanderthal DNA, but it also changed Neanderthals in fundamental ways.
Neanderthals lost their Y chromosome, How? writes Ann Gibbons for Science.
What happened?A new study finds Homo sapiens men essentially...