Mars has lost much of its original atmosphere, but what’s left remains quite active, according to NASA’s Mars rover Curiosity. Evidence has strengthened that Mars lost much of its original atmosphere by a process of gas escaping from the top of the atmosphere. Watch Tech Briefs TV for the latest videos of the mission at www.techbriefs.com/tv/mars. Keep up with Curiosity at http://mars.jpl.nasa.gov/msl.

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