here on earth?

Great article.

blames it on Pluto

Mars rover detects methane spike, organic molecules
Posted on December 16, 2014 by William Harwood

Carefully analyzing data collected by NASA’s Mars Curiosity rover, scientists discovered a sudden, unexpected spike in methane levels in the martian atmosphere over a two-month period one year ago, researchers announced Tuesday.

The roving science lab also has made the first definitive detection of organic molecules in surface rocks, adding additional support for the emerging picture of Mars as a once habitable planet.

“We now have full confidence that there is methane occasionally present in the atmosphere of Mars, and that there are organics preserved in ancient rocks on Mars in certain places,” said John Grotzinger, the Curiosity principal investigator. “This is important. Methane in the atmosphere and organics in ancient rocks are important because … they can both be consistent with the former presence of life or the existing presence of life.”

But simply detecting methane in the martian atmosphere “is not an argument that we have found evidence of life on Mars,” Grotzinger told reporters at the American Geophysical Union’s Fall meeting in San Francisco. “But it is one of the few hypotheses that we can propose that we must consider as we go forward in the future.”

More:
http://spaceflightnow.com/2014/12/16/mars-rover-detects-methane-spike-organic-molecules/