LifeOrcas are ganging up on great white sharks to eat their livers For the first time, video footage has captured orcas in the Gulf of California hunting young great white sharks, using a trick to flip them over, paralise them and get at their energy-rich livers News
SpaceWater might be even more important for alien life than we thought Without enough liquid water on the surface, a planet's atmosphere can become choked with carbon dioxide, raising temperatures to a level beyond what is survivable for all known life News