President Bush today signs the 21st Century Nanotechnology Research and Development Act, giving nanotech research $3.7 billion over the next four years. While many of the practical applications of nanotech have yet to be realized, the technology of machine miniturization could yield some very cool technologies in the future. Microscrubbing toothpaste ‘bots and self-replicating hair weaves are among the most ambitious of the things that nanotech has to offer, though that may be a long way off.
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