CNN New Day Sunday November 17, 2013 13:59:00
The planetary puzzle of life on mars. you've heard of cures. nasa's rover studying the geology on the ground. maven is hoping to study mars from above and answer a 4 billion-year-old question what made the fourth planet from the sun turn red and barren. >> it's gone from a desert, geological world, kind of boring rocks to this exciting blooming world with a history that does include warm wet times, climate change, dynamic atmosphere, land strides, ice sheets, buried ice, unbelievable. >> reporter: scientists believe mars may have looked like earth with blue skies and warm temperatures. >> we d...
Source: archive.org