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Play "What's This Stuff?"

From January 12–26, 2011, visit to play “What’s This Stuff?” asks David Pogue. Create an account and solve the clues to figure out the 10 mystery materials—some we use everyday, and others are on the cutting edge. Be one of the first to identify all 10, and you could win a great prize! To read the official rules, visit


Clues for Mystery Material No. 1