Can't decide where to spend your fortune on a trip out of Earth's atmosphere? Check out our Tourist's Guide to Space.

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Food contains an amazing amount of energy. If you don't believe it, feed candy to some kids and watch them bounce off the walls. Of course, tot-baiting is only one way to turn food energy into noise and destruction.

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Amateur rocketeers from all over North America are converging in Lethbridge, Canada, this weekend for the 24th annual Large Dangerous Rocket Ship convention. Some come to launch small kits, others to fire up giant home-brewed rocket motors, but everyone enjoys the thrill of a good explosion. Check out our preview of this year's event, from July's Popular Science.

The visitor who pulls up to this upstate New York hayfield on a sunny July Saturday afternoon might well wonder whether he’s stumbled upon a 4-H Club event or a third-world arms bazaar. There’s a

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The enthusiasts at the Large Dangerous Rocket Ship event pursue rocketry for its own sake, but that purity is rare in the history of the endeavor. Most unmanned launches have been aimed at military advantage or space domination.

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