LifeOldest hand hints we came down from trees earlier than thought The discovery of a 1.8 million-year-old pinky bone in Tanzania's Olduvai Gorge suggests that our ancestors had already come down from the trees by that time News
EarthMegafauna extinction: DNA evidence pins blame on climate change Humanity has long been on trial for the demise of mammoths and other large mammals – new forensic evidence reveals the true killer News