Has Mars Rover Curiosity Found Poop?

There is a lot of interest in the announcement that the Mars rover Curiosity has discovered something on or in the Martian surface. While NASA coyly refuses to say what they think it is until they can verify it, they did say they thought they had possibly found something of historical significance. One on the things they have been looking for is for the presence of the gas methane, which on Earth is a by-product of many forms of life (think flatulence). If they have indeed found it in significant amounts, that could be a major clue to the history of life on Mars, or the absence of it.

mars rover

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