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A U.S. District Court judge in Oregon has dismissed a patent infringement lawsuit against the Aircraft Owners and Pilots Association (AOPA).

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The dikes of the country’s water management system work so well that experts say they worry that citizens will begin to take staying dry for granted.

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Researchers have discovered a previously unknown mechanism for wear in metals: a swirling, fluid-like microscopic behavior in a solid piece of metal sliding over another. The findings could be used to improve the durability of metal parts in numerous applications.

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