Life as We Don't Know It

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Science  25 Aug 2000:
Vol. 289, Issue 5483, pp. 1307-1308
DOI: 10.1126/science.289.5483.1307

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There are two main groups of theories for the origin of life on Earth, the prebiotic broth theories and the hydrothermal theories, exemplified by the iron-sulfur world theory. In his Perspective, Wächtershäuser discusses the report by Cody et al., which provides key support for the latter proposal.