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Nature 423, 230-231 (15 May 2003) | doi:10.1038/423230a

Cosmology: A just-so story

Lawrence M. Krauss

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Physicists are learning to live with Einstein's 'fudge factor', the cosmological constant. New thinking attempts to tie its value to other fundamental constants in elementary particle physics.

The recognition, in the light of observational data, that Einstein's infamous cosmological constant might not be zero1, 2, 3 has changed almost everything about the way we think about the Universe, from reconsidering its origin4 to re-evaluating its ultimate future5. But perhaps the most significant change in cosmological thinking involves a new willingness to discuss what used to be an idea that was not normally mentioned in polite company: the anthropic principle.