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Published online 5 September 2008 | Nature | doi:10.1038/news.2008.1086

News: Q&A

All fired up

American climate scientist James Hansen explains why he's testifying against coal.

James Hansen, the director of NASA's Goddard Institute for Space Studies in New York City, is well known for rattling his nation's political establishment. This week, the climate scientist was in London, UK, to testify on behalf of activists who defaced a coal-fired power station in Kent.

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