In Pictures: Science vs. fiction: 15 sci-fi technologies that are (almost) here

Science fiction has a rich history of predicting the future. And in some cases, the future is now

Jetpacks George Jetson had one. So did James Bond and Boba Fett. Even Gilligan tried it once. The jetpack's roots in sci-fi culture go all the way back to the 1920s. Typically worn on the back, jetpacks are powered by compressed gases or sometimes water, and can achieve low-altitude flights of short duration. The first successful prototypes were tested in the late 1950s, using compressed nitrogen. The Bell Rocket Belt, developed in the 1960s, is one of the earliest operable jet packs -- a model is on display at the National Air and Space Museum in Washington, D.C. A few small operations maintain jetpack systems for air shows and stunt performances, but affordability and safety concerns have stymied the dream of personal...

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