Humans and Neanderthals may have overlapped in Europe for 5,400 years

These numbers are way different than what we thought earlier, and speaks to the idea of interbreeding.

[youtube https://www.youtube.com/watch?v=qvbeREWmD2k&w=620&h=315] The previous timeline of "modern humans arriving in Europe" was about 40,000 years ago (they left the African area about 60,000 years ago). Now, based on work from the journal Nature, that timeline seems different. Here's some context from The Wall Street Journal:

The Nature study offers a…