General Discussion

https://news.harvard.edu/gazette/story/2025/09/claims-of-pure-bloodlines-ancestral-homelands-dna-science-says-no/

“Human history is rife with contentions about the purity (and superiority) of the bloodlines of one group over another and claims over ancestral homelands.
More than a decade of work on ancient human DNA has upended it all.
Instead, Harvard geneticist David Reich said on Monday, increasingly sophisticated analysis of genetic material made possible by technological advances shows that virtually everyone came from somewhere else, and everyone’s genetic background shows a mix from different waves of migration that washed over the globe.
“Ancient DNA is able to peer into the past and to understand how people are related to each other and to people living today,” Reich said during a talk at the Radcliffe Institute for Advanced Study. “And what it shows is worlds we hadn’t imagined before. It’s very surprising.”
Human populations have been in flux for tens of thousands of years since our emergence from Africa. The details of the still-developing picture are complex, but the overall theme is one of increasing homogenization since human diversity fell from the time when modern humans lived next door to Neanderthals, two strains of Denisovans, and the diminutive Homo floresiensis of Indonesia”