"Our investigation found that during the fall of 2004 through early 2006, the NASA Headquarters Office of Public Affairs managed the topic of climate change in a manner that reduced, marginalized, or mischaracterized climate change science made available to the general public through those particular media over which the Office of Public Affairs had control (i.e., news releases and media access)."
http://oig.nasa.gov/investigations/OI_STI_Summary.pdf
http://oig.nasa.gov/investigations/OI_STI_Summary.pdf
