Human-neanderthal interbreeding introduced a lot of Neanderthal DNA into humans, but why did none of it go the other way? It mya have after all.
Evidence of Neanderthal interbreeding introducing human genes into Neanderthals was limited. New fossils from Germany confirm that it actually did happen.
The origin of Homo sapiens has typically been dated to around 200,000 years ago, but a series of new discoveries are pushing back the first humans
People with more Neanderthal genes have a skull that differs from the human average producing a more Neanderthal-like skull. The brain also changes this way