Times Online - Science Central - WBLG: Is there a Life On Mars Conspiracy?

Michael Brooks, consultant for New Scientist and the author of 13 Things That Don’t Make Sense, sends us a new perspective on the riddle of the empty planet next door

Some pesky scientists have just pointed out an appalling design error in NASA’s latest attempts to find life on Mars. This is beginning to look like a conspiracy. Does someone not want us to find life on Mars?

The best argument for why no one has even found carbon brought in on asteroids and comets is that chemicals called perchlorates, also thought to be in the Martian soil, have destroyed it all. When perchlorates get hot, they burn up carbon-based molecules. That’s why NASA uses them in rocket fuel. The problem is, as NASA's Douglas Ming (the Merciless) has pointed out in a recent paper, the experiments to search for carbon involve heating soil samples to a few hundred degrees and sniffing the vapours. If the soil contains carbon molecules and perchlorates, the carbon molecules will simply burn up. No wonder they couldn’t find any.