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Science 3 January 1997:
Vol. 275. no. 5296, pp. 38 - 39
DOI: 10.1126/science.275.5296.38
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Perspectives

Heinrich D. Holland

When did life first appear on Earth? Previous efforts to answer this fundamental question have found early life as far back as 3450 million years ago, in rock formations in Australia. In his Perspective, Holland discusses data recently published by Mojzsis et al. in the journal Nature that pushes the earliest life back to more than 3850 million years ago.

The author is in the Department of Earth and Planetary Sciences, Harvard University, Cambridge, MA 02138, USA. E-mail: solomon{at}eps.harvard.edu

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Science. ISSN 0036-8075 (print), 1095-9203 (online)