LifeOrigins of modern horses traced to breeding revolution 4200 years ago A genetic analysis of ancient horses reveals that breeding techniques developed by people in the Pontic-Caspian steppes enabled the rapid spread of horse-powered travel 51¶¯Âþ
HumansAncient people carved mysterious symbols near dinosaur footprints A unique site in Brazil features rock carvings closely associated with dinosaur tracks, suggesting prehistoric people saw the footprints as meaningful 51¶¯Âþ