1/ What moved people before states, markets, or borders? We turn ancient DNA into a direct measure of prehistoric migration. When two ancient individuals share a long segment of inherited DNA (identity-by-descent, IBD), they share a recent ancestor, so someone in that lineage
Using ancient DNA data to measure migration over the past 10,000 years shows that human mobility followed climate corridors and migration acted as adaptation to climate change, from Peter Huybers, Marco Tabellini, @ctaylor463, and Francesco Toti nber.org/papers/w35371
