GEAR We've been here all week, and we're ready to go home. But before we do, we've got a bunch of crazy gadgets to show you! | | |
SCIENCE Three years ago, a solitary mathematician released an impenetrable proof of the famous abc conjecture. At a recent conference dedicated to the work, optimism mixed with bafflement. | | |
SECURITY Cryptographer David Chaum's ideas helped spark the decades-long war between encryption and government. Now he's back with a new idea designed to end it. | | |
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