DARPA Celebrates 50 Years of Pushing the Envelope
holy_calamity writes "The Defense Advanced Research Projects Agency was founded in 1958 after the Soviets shocked the world by launching Sputnik. New Scientist recounts the history of the agency charged with protecting the US from 'technological surprise' and lists some of its most spectacular successes and failures."
Orion overlapped a non-DARPA project called SNPO (pronounced "Snow-Poe") which was concerned with practical nuclear-powered space vehicles. For some reason, spewing radioactive material into the atmosphere became unpopular and the project was shelved, but not until working engines had been built and tested.
Intron: the portion of DNA which expresses nothing useful.