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Satellite-Guided Munitions

Highly accurate yet affordable strike weapons, proved in Afghanistan, are the latest upgrades to America's arsenal

By Michael Puttré


Some stars are magnetized so intensely that they emit huge bursts of magnetic energy and alter the very nature of the quantum vacuum

By Chryssa Kouveliotou, Robert C. Duncan and Christopher Thompson

Evolving Inventions

Computer programs that function via Darwinian evolution are creating inventions that are novel and useful enough to be patented

By John R. Koza, Martin A. Keane and Matthew J. Streeter

Drink to Your Health?

Three decades of research shows that drinking small to moderate amounts of alcohol has cardiovascular benefits. A thorny issue for physicians is whether to recommend drinking to some patients

By Arthur L. Klatsky


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