EarthWhy did evolution stall during the 'boring billion'? About 1.7 billion years ago, evolution seemed to grind to a halt, but a long time later it kicked in with a vengeance – plate tectonics may explain why News
EarthAliens versus predators: The toxic toad invasion The cane toad is spreading fast across Australia, killing anything that eats it. Yet the feared wildlife catastrophe hasn't happened, finds Michael SlezakFeatures