Here is a link where NASA scientists expose what is going on; where is a link showing NASA scientists "debunking" it?
http://climate.nasa.gov/evidence/
Personally, I don't deny global warming or climate change if that's what you prefer to call it, but I'm skeptical of the claim.
Group think doesn't exactly have a stellar record. This was the prevailing wisdom on Iraq's WMDs and as we all painfully know today, the group was wrong: