WFS,Riffin T Sajeev,Russel T Sajeev,World Fossil Society:Key The first direct evidence that humans played a substantial role in the extinction of the huge, wondrous beasts inhabiting Australia some 50,000 years ago — in this case a 500-pound bird — has been discovered by a University of Colorado Boulder-led team. The flightless bird, known as Genyornis […]