Aznalcollar disaster compared with Cretaceous mass extinction

Researchers from the University of Granada (UGR) have compared the disaster caused by the Aznalcollar spillage in the Donana National Park in Andalusia 11 years ago with the biggest species extinction known to date. What do these two disasters have in common? The scientists say that carrying out comparisons of this kind will make it possible to find out how ecosystems recover following mass extinctions...

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