The proliferation of junk e-mail is threatening to overwhelm the Internet. Software companies are rushing to build defenses-but will the new technologies do more harm than good?
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Government efforts to keep science and technology out of terrorist hands conjure images of the Cold War. But it’s biomedical researchers in the United States who could be frozen out.
Smart, networked sensors will soon be all around us, collectively processing vast amounts of previously unrecorded data to help run factories, maintain crops, and even watch for earthquakes.
Hybrid devices that are part machine, part living cells, offer new hope to patients for whom purely artificial treatments like dialysis aren´t good enough.
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