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The Curiosity Mars rover, launched in November 2011, is powered by a nuclear battery that relies on thermoelectric materials to turn heat from radioactive decay into electricity. (NASA/JPL-Calt

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The house's riveting new campaign film fuses mystery with artistry.

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Sunny skies during the morning hours will become overcast in the afternoon. High 74F. Winds light and variable..

Some clouds early will give way to generally clear conditions overnight. Low 3

Butterfly valves are quarter-turn flow control devices that utilize a metallic disc that rotates around a fixed stem axis. They are quick-action flow control valves that allow rotations through 90