Forthofer studies fire tornadoes with the aim of protecting firefighters.

福托菲尔研究火龙卷风的目的是为了保护消防员。

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Fire tornadoes can last for an hour or more, and they can't be extinguished directly, Forthofer said.

火龙卷可以持续一个小时或以上，而且它们不能被直接扑灭，福托菲尔说。

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Fire tornadoes can set objects in their paths ablaze, and they can hurl burning debris out into their surroundings.

火龙卷能地然所经之处的物体，随后还会把燃烧残骸卷到周围。

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I'll tell you floods, tornadoes, fire etc all those bad things as well as the sea rising and all the polar bears etc and the rainforest getting destroyed so basically global warming is the end of the world and the end of the world will happen one day even if you recycle one million bottles.

BBC: Last Updated: Thursday May 08 2008 11:40 GMT