National Academy of Sciences

The CIA, in partnership with other U.S. government agencies, is funding a $630,000 scientific study into the plausibility and potential effects of climate engineering to reduce global warming. Let the conspiracy theories begin.
Jul 18, 2013   Grist
The National Academy of Science has released a report showing that health effects from burning fossil fuels cost the economy about $120 billion a year. Global warming was not included due to uncertainty, so it's focused mostly on air pollution.
Oct 27, 2009   The New York Times - Environment