The ozone layer was destroyed during Earth's biggest mass extinction
6 January 2023
Fossils show plants were producing higher levels of sunscreen chemicals to protect against higher ultraviolet light levels at the end of the Permian period
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Premium
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11 June 2018
In the past decade most of the oldest baobabs, many of them sprouted over two millennia ago, have died unexpectedly and few new ones are sprouting
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Cannabis – the source of the drug marijuana – virtually disappeared from Europe just as farmers arrived, so they didn’t get the chance to grow it for another 4500 years
The worst mass extinction may have begun with mass sterilisation
7 February 2018
There seems to have been a surge in ultraviolet radiation during the Permian extinction 252 million years ago, and it might have left plants infertile rather than kill them
