It was really a good idea. Get accurate data on green house gasses and spend a little quality time with "science" (as opposed to the usual hysterical fear mongering).
The OCO, orbiting carbon observatory, was set to start working this month, but the satellite shit the bed soon after liftoff. See NASA's explanation here.
Why do I have a feeling that Al Gore and Mark Serreze are secretly happy that this thing went bad? If the science debate is over (Al Gore) and we are in the "death spiral" (Mark Serreze), the new data would only be a distraction. Because they really like the current GHG-global warming hypothesis, and without a platform like the OCO we are back to having science standing on it's head trying to disprove an unproven hypothesis.