Quote:
Originally Posted by Ara Pacis
Yeah, I don't like being click-jacked, but the link, as it appears in my status bar, appears to be from NASA, so it's probably safe. Still, a quote or summary of the page would be nice.
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Especially as nothing at the linked site says anything about the thread title, at least not directly, though I assume the OP was referring to methane traces in the atmosphere, which can, be a sign of life in an oxygen rich environment (methane has short persistence in the presence of oxygen and must be renewed by some mechanism to be present in the atmosphere at a constant or renewed percentage - on Earth the most common source is life). In an oxygen poor environment, however, methane persists much better, and significant percentages could be maintained atmospherically through geologic seepage through fractured crust regions and other mechanisms.
Even little, green-bugs, are as of yet, unsubstantiated. The discovery of life would be momentus, but problematic in some respects.