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Evan I. Schwartz Guest Contributor

  • The German Experiment

    The government sets a premium price on solar and other alternative power sources. The policy offers lessons in ways to encourage the use of renewable energy.

    24 comments

  • The Sound War

    Focused beams of sound could direct music or speech to a single person in a crowd. Two inventors have staked competing claims to a potential audio revolution.

  • Spam Wars

    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?

  • Patents Go Global

    A single global patent system could simplify the international patent process. Will the United States sign on?

    1 comment

  • The Inventor's Playground

    Welcome to the workspace of Dean Kamen, one of the world’s most prolific inventors. On a tour of his lab, Kamen explains how he comes up with tomorrow’s brilliant ideas.

  • The Invention Factory

    Nathan Myhrvold created Microsoft’s research group and left with a vast fortune. Now he’s created his own organization to keep innovation humming.

    6 comments

  • Digital Cash Payoff

    PayPal’s fraud-busting technology makes it easy for people to pay one another over the Internet–and may give credit card companies a run for their money.

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