On this date in 1945 the United States detonated the first plutonium-based nuclear weapon, in sunny New Mexico. Not in one of the populated parts, of course. There are valid arguments in support of the decision to use nuclear weapons to end WWII, but on the whole this would be a much nicer world if such weapons had not been invented. That said, somebody would have done it eventually, and I'm damn glad it was us. I just wish somebody else had his finger on the trigger right now.