New Study Throws Cold Water On Idea Of A Tropical Martian Paradise

It is known that at some point Mars was warm enough to have liquid water flowing on its surface. The evidence of ancient rivers, streams, and lakes remains. But it was not a long-term tropical vacation paradise. Instead, warmth and water flow on ancient Mars was probably episodic, related to brief periods of volcanic activity that spewed tons of greenhouse-inducing sulfur dioxide gas into the atmosphere, according to new climate models of early Mars which suggest that periods of temperatures warm enough for water to flow likely lasted for only tens or perhaps hundreds of years at a time. read more

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