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Letters From Charles Darwin

From the Popular Science archives. Happy Darwin Day!<p><i>These letters originally appeared in the March 1903 issue of</i> Popular Science. <i>The "Hitherto Unpublished Letters of Charles Darwin" were compiled and edited by Darwin's son, Francis Darwin, and the British botanist Albert Charles Seward. Today would</i> …

South America

This Computer-Generated Swarm Is Mind-Melting

Replace a flock of birds with fireflies on a dark night, and this is about what you'd get.<p>Swarms--like a flock of birds, or a school of fish--are mathematically complicated, but computer scientists are getting better at modeling, and learning from, them. Using code that simulates birds in …

National Ignition Facility Announces Record Amount Of Fusion Energy

Physicists had to compress the fuel to twice the density of the core of the sun.<p>U.S. physicists are reporting they've created more energy than ever before from a laser-triggered fusion reaction.<p>Fusion is the reaction that occurs in the interiors of stars, including Earth's own sun. Theoretically, …

2015 Audi S1: The Hottest of Small Hatches

Affordable, upscale small-car fun for Europe's masses.<p>Two years ago, we spent some time behind the wheel of a limited-edition Audi A1 Quattro, and we were left in awe of the 256-hp supermini’s perfectly balanced chassis and incredible performance. In the immediate aftermath, Audi functionaries …

Auto Shows

The 10 most important cars at Auto Expo India 2014

India

Tempus fugit