Researchers at the European Laboratory for Particle Physics (CERN) in Switzerland invented the World Wide Web. CERN's recently refurbished Web site provides an informative introduction to the world of particle physics. There's an account of how the Web was born, up-to-the-minutes news of what's going on at the lab, and links to the working pages of various physics experiments. Did you know that the world's largest magnet, weighing more than the Eiffel tower, is at CERN?