http://www.nytimes.com/2011/11/23/science/space/aboard-mars-curiosity-rover-tools-to-plumb-a-methane-mystery.html
Read the article in the link above. What evidence (read entire article to be able to answer this question thoroughly) do scientists have that there is life on Mars? How is this evidence related to our chemistry class and to the scientific process? What do think about the possibility of life on Mars?
