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 51¶¯Âþ
EnvironmentMost climate policies do little to prevent climate change An analysis of 1500 climate policies in 41 countries has found that a slim minority have led to a significant reduction in carbon emissions, with most policies being too specifically targeted to make a substantial difference 51¶¯Âþ