NASA just found places where microbial Martians might be able to thrive

Scientists have discovered small, potentially habitable areas on Mars where life could, in theory, transform sunlight, water, and carbon dioxide into oxygen, according to a new NASA study. Though the research doesn't mean photosynthetic aliens are indeed living in these environments now — or even that they were there in the past — the findings provide the U.S. space agency with attractive targets for future searches.For years, NASA's Mars Reconnaissance Orbiter — a spacecr