Freeze Warnings & Frost Advisories in effect this weekend

Cold overnight lows will persist this weekend bringing patchy to widespread frost to some desert areas. Lows in the mid 20's will be possible in the high desert.

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  • Space-based solar: the energy of the future?

    Space-based solar power

    NASA

    In space there's no atmosphere, it's never cloudy, and in geosynchronous orbits it's never night: a perfect place for a solar power station to harvest uninterrupted power 24 hours a day, 365 days a year.

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    By Peter Shadbolt for CNN
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