- Alien hunters claim to have found evidence of life on Mars in photos taken by Curiosity rover
- NASA scientist says there may be life on Mars, but only at the microbial level
- The claims may be the result of pareidolia, when the brain recognizes patterns that aren't really there
(CNN)For most of us Earthlings, the photos of Mars taken by the Curiosity rover reveal little more than a desolate red landscape inhabited mostly by rocks. Lots and lots of rocks.