On the Cover
September-October 2002 Volume 90, Number 5
People living on the eastern side of the Andes in Peru and Bolivia must
cultivate crops under challenging high-altitude conditions. As this
photograph of family plots on the flanks of the Cuyo-Cuyo valley
attests, luxuriant growth of potatoes is possible on hillside terraces, a
common strategy for farming steep terrain. ...
On the space shuttle Columbia, an experiment explores chemical growth without gravity and the challenges of orbital science
Oxygen-deprived zones are common and might become more so with climate change. Here life hangs on, with some unusual adaptations
A cross-disciplinary study uncovers a scientific basis for the scheme Andean potato farmers traditionally use to predict the coming rains
The exquisite three-dimensional structures of proteins allow their diverse functions, but exactly how proteins fold remains a puzzle
New maps of the cosmic background radiation may display evidence of the quantum origin of space and time
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A review of Body Heat: Temperature and Life on Earth, by Mark S. Blumberg and A Matter of Degrees: What Temperature Reveals about the Past and Future of Our Species, Planet, and Universe, by Gino Segrè
See all book reviews for this issue.