It’s total bunk. If an agency like NASA was in denial of global warming, you’d hear a lot more about it. What that says is something we’ve known for a long time: CO2 takes in solar energy, and radiates it as heat. When in the upper layers of the atmosphere, this results in lots being radiated out of our atmosphere, because the radiation doesn’t have direction, and there’s nothing above it to stop the radiated energy. Think of it like a mirror. The uppermost parts of the atmosphere reflect some energy back outwards. But it also reflects energy coming up back down. Hence ‘greenhouse’. And plus most of our production of CO2 is in the lower atmosphere, where it serves a slightly different role.
Also, for reference (yours is broken), this seems to be the report that has all these climate change denialists in a tizzy: http://science.nasa.gov/science-news/science-at-nasa/2012/22mar_saber/. Specifically the line ”“Carbon dioxide and nitric oxide are natural thermostats,” explains James Russell of Hampton University, SABER’s principal investigator. “When the upper atmosphere (or ‘thermosphere’) heats up, these molecules try as hard as they can to shed that heat back into space.” ” Think about the way that’s stated. Does it sound like him making some great revelation that puts him at odds with ~%95 of scientists? Or does it sound like he’s simply explaining a well-understood effect?
Edit: Also, I noticed a footnote that puts it in even better perspective: ”“Heat radiated by the solid body of the Earth is very large compared to the amount of heat being exchanged in the upper atmosphere. The daily average infrared radiation from the entire planet is 240 W/m2—enough to power NYC for 200,000 years.” The fact that the upper atmosphere’s CO2 happens to radiate off some heat from space is a drop in the bucket.