The trick will be ruling out nonbiological explanations
(Newser) -
Methane—a key ingredient in delightful things like swamp gas, flatulence, and fossil-fuel emissions —could also prove to be a key biosignature, i.e., evidence of extraterrestrial life. Thus, the gas is top-of-mind for scientists preparing to receive an influx of data from the James Webb Space Telescope. According...