EnvironmentMega El Niños may have played a part in the Permian mass extinction Extreme weather events lasting more than a decade could have killed off forests 250 million years ago, contributing to Earth's worst ever mass extinction News
LifeExtinct Tasmanian tiger yields RNA secrets that could aid resurrection RNA, which regulates the activity of DNA, is a crucial part of building an organism - and now researchers have extracted some from an extinct animal for the first time News