The carbon cycle

NASA has launched a satellite designed to track carbon dioxide, a leading greenhouse gas that is responsible for global warming. The satellite is now a part of the A-Train, a constellation of five other international Earth-observing satellites. The OCO-2 mission lasts two years and aims to provide the most detailed picture to date of natural sources of carbon dioxide -- where it is coming from and where it gets absorbed on the Earth's surface. Videographic explaining the carbon cycle.VIDEOGRPAHIC