|Sunday, June 24, 2012||14D||Atmospheric worries||Elizabeth C. Gorski|
|Saturday, August 15, 2009||50A||"Hot" political topic||Matt Ginsberg|
|Friday, August 22, 2008||54A||"An Inconvenient Truth" topic||Kevin G. Der|
|Friday, March 3, 1995||36A||CO2 and methane, to a ecoscientist||Chuck Deodene|
1 result for GREENHOUSEGASES from older pre-Shortz puzzles.
|Friday, June 5, 1992||17A||Cause of global warming||Betty Jorgensen||Maleska|