“The methane being generated on Mars is indigenous to Mars”

It’s still not proof of life on Mars but, as the BBC reports, “Scientists at Imperial College London say they have now ruled out the possibility that the methane is being constantly deposited by meteorites landing on the planet.” Or, as the Irish Times notes, “The methane being generated on Mars is indigenous to Mars,” [Kevin Nolan, physics lecturer at the Institute of Technology Tallaght] said yesterday. “It is a big deal.” And we also know there’s water [ice] there too. Here’s an informative NasaTV video on the Martian methane.