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How the Universe Works

Life and Death on the Red Planet

Season 5 Episode 6
Life once existed on Mars, but a series of devastating mass extinctions have made present-day life nearly impossible. The latest science shows how Martian life keeps bouncing back as it transforms from a watery world like Earth into a desert planet.
  • 43 min
  • TV-PG
  • Premiered 01/24/2017