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The Threat of Silent Earthquakes

A lack of rumbling does not necessarily make an earthquake harmless. Some of the quiet types could presage devastating tsunamis or larger, ground-shaking shocks

By Peter Cervelli

The Fairest Vote of All

All voting systems have drawbacks. But by taking into account how voters rank candidates, one system gives the truest reflection of the electorate's views

By Partha Dasgupta and Eric Maskin

The Addicted Brain

Drug abuse produces long-term changes in the reward circuitry of the brain. Knowledge of the cellular and molecular details of these adaptations could lead to new treatments for the compulsive behaviors that underlie addiction

By Eric J. Nestler and Robert C. Malenka

Defusing the Global Warming Time Bomb

Global warming is real, and the consequences are potentially disastrous. Nevertheless, practical actions, which would also yield a cleaner, healthier atmosphere, could slow, and eventually stop, the process

By James Hansen

A New Race of Robots

Around the U.S., engineers are finishing one-year crash projects to create robots able to dash 200 miles through the Mojave Desert in a day, unaided by humans. Scientific American tailed the odds-on favorite team for 10 months and found that major innovations in robotics are not enough to win such a contest. Obsession is also required

By W. Wayt Gibbs

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