https://www.theatlantic.com/science/archive/2018/03/ancient-dna-history/554798/
“Today, surprisingly, the people carrying the most Neanderthal DNA are not in Europe but in East Asia.”
Also, re: the Proto Indo Europeans, whose languages shape most of the world’s, “one of the hypotheses for why people from the steppe were so successful in spreading through Europe is that they brought the bubonic plague with them. Since the plague is endemic to Central Asia, they may have built up immunity but the European farmers they encountered had not.”
