Environment
Mega 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
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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
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