The theory is the brainchild of Professor Bill Napier, from Cardiff University, who says it explains the mysterious period of extinction around 11, 000 BC.

这个理论是卡迪夫大学（Cardiff University）教授比尔·内皮尔（Bill Napier）提出的，他说这个理论解释了大约公元前1.1万年时神秘的物种灭绝时期。

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Mr Napier, an expert on employment law, said officials, including Chief Minister Frank Walker and Chief Executive Bill Ogley, had been too ready to accept "relatively weak" evidence about how the abuse inquiry was handled.

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