"Humans have been seeing strange things on the surface of Mars for centuries. From the 1700s up through the present day, widespread fame has been available to anyone able to produce even the slightest bit of flimsy evidence that there's Martian life."

"Or the methane could be produced by some kind of Martian cows, buried no doubt. On Earth each Earth-type cow produces .6 metric tons of methane annually. One of the comments to yesterday’s NASA press conference on this discovery pointed out that since the plume contained about 19,000 tons of CH4 that indicates (if Martian cows are similar to Earth cows) that we should be looking for about 19,000/.6 = 31,000 (hidden or buried) Martian cows. This possibility will probably be reported on extensively in supermarket publications over the next several weeks."

One is reminded of the sinkholes of northwest Kentucky....