
NASA has searched for signs of life on Mars for years, but for the first time ever, the agency’s rover Curiosity has taken a crucial measure of an ingredient necessary for life as we know it in the Red Planet’s rocks: Organic carbon.

NASA has searched for signs of life on Mars for years, but for the first time ever, the agency’s rover Curiosity has taken a crucial measure of an ingredient necessary for life as we know it in the Red Planet’s rocks: Organic carbon.