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Gym rat: In his quest to optimize his health, Larry Smarr recently underwent tests to measure his peak oxygen consumption, maximum heart rate, and other physiological indicators. Credit: Michael Kelley

The Patient of the Future

Internet pioneer Larry Smarr’s quest to quantify everything about his health led him to a startling discovery, an unusual partnership with his doctor, and more…

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False Positive

A report in Science 2 years ago that linked a mouse retrovirus, XMRV, to chronic fatigue syndrome astonished scientists and patients alike. But the theory…

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Fertility Rites

PASCAL GAGNEUX, one of the few laboratory scientists who has studied wild chimpanzees, is a walking encyclopedia of chimpanzee/human differences. Ever since scientists began studying chimpanzees,…

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