Signs Of Life On Mars? Not Exactly

The director of NASA’s Jet Propulsion Laboratory said last week that preliminary data showed the possibility that the agency’s Mars Science Laboratory – the six-wheeled rover that landed on Mars in August — had found signs of carbon-containing molecules.

According to a JPL news release, however, there will be no major announcements Monday, when scientists take part in a news conference at the annual meeting of American Geophysical Union. The science team is continuing to try and verify what the rover has found.

So why are the scientists being so careful with their findings and why are these carbon-containing molecules of such great interest?