No life on Mars? What?!

So, in the latest of discoveries by NASA's very own Curiosity rover, absence of Methane, as a result of no sign of it's detection could simply mean that Mars never supported life forms of any type. Initial reports suggested there were signs of the gas but the Rover has not picked up anything.
So, I guess there are no aliens ;)

But this is science, so you can never be sure. Stay Tuned!