GREEN BANK, West Virginia (Reuters) - Welcome to the National Radio Quiet Zone. Feel free to shout, play the tuba or let out a primal scream. Just don't think about using a microwave oven. One stray zap from a microwave -- or a car's sparkplugs, or even an electric blanket -- in the heart of the 13,000 square mile zone could interfere with science at the National Radio Astronomy Observatory at Green Bank, a patch of forested Appalachia just west of the Virginia border. The quiet that the zone is meant to protect does not refer to sounds humans can...
