Interesting new article from
Wired
"The life on Mars issue has recently undergone a paradigm shift," said Ian Wright, an astrobiologist at the Planetary and Space Sciences Research Institute at the Open University in Britain, "to the extent now that one can talk about the possibility of present life on Mars without risking scientific suicide."
"Formisano showed evidence of the presence of formaldehyde in the atmosphere... It means huge amounts of methane must be produced on Mars... 'There are three possible scenarios to explain the quantities: chemistry at the surface, caused by solar radiation; chemistry deep in the planet, caused by geothermal or hydrothermal activity; or life,' he added."
"And, with no known geological source of formaldehyde on Mars, it's clear where Formisano's suspicions lie."
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