Lava flows down a hill under an evening sky. The Permian-Triassic mass extinction was caused by volcanic eruptions in what is now the Siberian Traps, releasing 100,000 billion metric tons of carbon ...

A recent study reveals that newly evolved shark and ray species go extinct faster than older ones. Researchers at the University of Zurich (UZH) analyzed more than 20,000 fossil records of sharks and ...