A cheap new way to attach mirrors to silicon yields very efficient solar cells that don't cost much to manufacture. The technique could lead to solar panels that produce electricity for the average price of electricity in the United States.

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Someone who chooses to remain nameless tells us that she or he has written a proof-of-concept worm for the Mac, but doesn't feel like backing up the claim with anything more than a blog post.

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A novel approach to concentrating sunlight could cut solar panel costs.

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