Curiosity Finds Mysterious Oxygen Fluctuations on Mars

By Ryan F. Mandelbaum NASA’s Curiosity rover sniffed out an unexpected seasonal variation to the oxygen on Mars, according to new research. Curiosity has long been returning some appropriately curious results. After locating methane on the planet, studies from its spot in Gale crater found regular changes to the methane unexplainable by the environmental factors that scientists …