Paul B. Wignall is Professor of Palaeoenvironments at the University of Leeds, and a leading expert on extinctions. In addition to his considerable research output, he has authored a popular science book, The Worst of Times, and has contributed articles to popular science magazines.
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Most people are familiar with the dodo and the dinosaur, but extinction has occurred throughout the history of life, with the result that nearly all the species that have ever existed are now extinct. Today, species are disappearing at an ever increasing ... SEE MORE