Scientists said on Tuesday they had transformed age-worn cells in people over 90 — including a centenarian — into rejuvenated stemcells that were “indistinguishable” from those found in embryos.

Scientists on Wednesday unveiled evidence that two species of early cavemen lived and died near their places of birth while most females of the same species settled down after coming from afar.

The rapid decline of mammoths and other megafauna after humans spread across the New World may explain a bone-chilling plunge in global temperatures some 12,800 years ago, researchers reported on Sund