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Published online 31 March 2001 | Nature | doi:10.1038/news010404-5

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Hot flush over in a flash

The young Earth might not have been hot enough for long enough to account for life as we know it.

Evolutionary trees imply that, like the bacteria that today inhabit hot volcanic springs, our earliest ancestors liked being boiled alive. But new research reveals that the surface of the Earth might not have been hot enough for long enough to allow heat-loving bacteria to evolve from primal slime1.

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