Mars atmosphere has life-killing chemical The Salt Lake Tribune

An astronomy team led by a Boulder-Colo.-based Space Science Institute researcher has detected hydrogen peroxide for the first time in the martian atmosphere. Antiseptic and life-killing, the chemical helps explain why the martian atmosphere and surface are void of life. Acting as a catalyst, it drives the abundance of carbon dioxide and carbon monoxide in the martian atmosphere. Without hydrogen peroxide, molecular oxygen — now a tiny sliver — would soar to compose 10 percent of the martian atmosphere.