Once upon a time, when banks observed the gold standard, every dollar was backed by an equal amount of metal. Put simply, your money was in the vault. But now cash is all most people ever get to hold, and as the dollar goes digital, the only tangible vestige of your wealth will soon be the computer that keeps track of it. So where is your money today?
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Science is reinventing play, from extreme sports to gamification to ridiculous roller coasters to the playgrounds of tomorrow, and this issue is chock full of fun. Also, on a less fun note: Did global warming destroy my hometown?