The countdown is on hold for NASA's first mission to study climate change. NASA stopped the countdown at California's Vandenberg Air Force Base just 46 seconds before the Orbiting Carbon Observatory 2, or OCO-2, was to lift off. The space agency scrubbed the launch because of a failure in the launch pad's water flow. No make-up date has been set.
NASA aims to create what scientists call a vantage point to study atmospheric carbon dioxide from space. The OCO-2 will focus, not only on where carbon comes from, but where it is absorbed. Climate change experts say it's essential to understand both the sources and "sinks" of carbon in order to create laws and regulations to effectively control carbon concentrations.