Human‑pressure drives rapid behavioural divergence

High‑quality genomics from a small, isolated population of Marsican brown bears shows selection on behaviour (tolerance of humans) detectable over ~2–3k years. The case provides an empirical calibration for how quickly strong, consistent selection plus low gene flow can produce population‑level behavioural shifts in mammals. — If robust, this calibration constrains public arguments about the plausibility of recent evolutionary differences between human populations, but it also warns that extrapolation to humans is complex and easily politicized.