Researchers say fossilised marks were apparently made in same place within days of each other about 1.5m years ago About 1.5m years ago a big-toothed...
DNA testing on 64 skeletons shows related boys were probably chosen as offerings in ancient city of Chichén Itzá Genetic analysis of the skeletons of...
Scientists studied jewelry made from now extinct creatures and theorize that humans arrived in Americas 27,000 years ago New research suggests humans lived in South...