NASA launches carbon-tracking satellite.

OCO-2 will collect more than 100,000 measurements of CO2 concentrations per day beginning in early 2015. It will also monitor plant growth and health by tracking fluorescence given off by plants as they photosynthesize and take up carbon dioxide.

very good question from the comments: "What if OCO-2 indicates that human use of fossil fuel (CO2) is not a major contributor to climate change/global warming?" But the answer is obvious ... "shut up, they said". And OCO-2 will go the way of Lois Lerner's hard drive....