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NASA Scientists Baffled --"On Mars Methane, a Sign of Life on Earth, Changes Inexplicably with the Seasons"
 

NASA Scientists Baffled --"On Mars Methane, a Sign of Life on Earth, Changes Inexplicably with the Seasons"

NASA Scientists Baffled --"On Mars Methane, a Sign of Life on Earth, Changes Inexplicably with the Seasons"     One explanation "that no one talks about but is in the back of everyone's mind," is biological activity, says Mike Mumma, planetary scientist at Goddard Space Flight Center. "You'd expect life to be seasonal." From the pasture to the swamp, methane emissions on Earth are the effluvia of life. So what are whiffs of the gas doing on barren Mars? Trace detections of the stuff, alongside glimpses of larger spikes, have fueled debates about biological and nonbiological sources of... read more

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