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Go on a decade-by-decade voyage of discovery through life-changing inventions, like the radio that made the world smaller, the machine gun that made it more dangerous, or the parking meter that made it more expensive.
Mark DeNicola,Christopher ONeill,Katie Uhlmann,Jennifer De Lucia,Chris Hadfield,Brian Scott Carleton,Scott Vancea,Shane Harbinson,Ron Basch,David Emanuel,James Fanizza,...
