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ikanreed [soylentnews.org] writes:

The search for extra-terrestrial life focuses quite heavily on the presence of liquid water. That's because all life on earth depends on water, using it as a medium for all cells, and an ingredient for many biological processes.

Is life without water possible? A chemical engineer and others at Cornell University devised a hypothetical model [eurekalert.org] for life that could instead use liquid methane as its medium, opening more possibility for simple life on Titan, and other cold planets.

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