December 16, 2014 | David

On Earth, living things are absolutely everywhere - from desert salt pools to deep ice lakes in Antarctica. I can easily imagine life on Mars. But is there any evidence for it?

NASA has just announced results from 20 months of gas testing by its Curiosity rover. The rover sensed occasional bursts of methane gas. It doesn't prove anything - but there's a chance the methane could be created by bacterial life. Let's hurry up and get more advanced technology to Mars to find out if we have off-planet neighbours!

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Curiosity

Methane concentrations are 4000 times lower in the atmosphere on Mars than on Earth.

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Image: Flickr/NASA Goddard Space Flight Center

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