View Full Version : Maybe Sulfur Dioxide, Not Carbon Dioxide, Kept Mars Warm

2007-Dec-21, 01:40 AM
Try to walk on Mars today, and the planet will simultaneously freeze and suffocate you. Not to mention the minimal air pressure and relentless radiation from space. But billions of years ago, the Red Planet was much warmer and liquid water flowed on its surface. Warm temperatures on Earth are maintained by the carbon cycle, [...]

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