The Presidential Daily Brief


  1. Mars Surface

    NASA Reveals Liquid Water on Mars

    Darn, we were hoping for aliens. The U.S. space agency teased a “major science finding” today, and they weren’t all wet: Scientists have found definitive signs of briny liquid water on the fourth planet from the sun. Dark seasonal streaks on the planet’s surface were thought to be the result of flowing water, but now research teams have detected hydrated salt as well, using the high-res camera on NASA’s Reconnaissance Orbiter. Next they’ll have to find the source — and investigate prospects for life on Mars.

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