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Science 23 November 2007:
Vol. 318. no. 5854, pp. 1255 - 1256
DOI: 10.1126/science.1147491
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Perspectives

PHYSIOLOGY:
Still Pondering an Age-Old Question

Thomas Flatt1 and Daniel E. L. Promislow2

A theory of trade-offs to explain why we age has spurred 50 years of interdisciplinary research in evolution and molecular genetics.

1T. Flatt is in the Department of Ecology and Evolutionary Biology, Brown University, Providence, RI 02912, USA. E-mail: thomas_flatt{at}brown.edu

2D. E. L. Promislow is in the Department of Genetics, University of Georgia, Athens, GA 30602-7223, USA. E-mail: promislow{at}uga.edu

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