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Blasts from the past

作者:宰裾    发布时间:2019-03-06 07:19:01    

By Nicola Jones VOLCANOES were more destructive in ancient history. Not because they were bigger, but because the carbon dioxide they released wiped out life with greater ease. Paul Wignall from the University of Leeds was investigating the link between volcanic eruptions and mass extinctions. Not all volcanic eruptions killed off large numbers of animals, but all the mass extinctions over the past 300 million years coincided with huge formations of volcanic rock. To his surprise, the older the massive volcanic eruptions were,

 

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