A B C D E F G H I J K L M N O P Q R S T U V W X Y Z
Gasification
Gasification
Gender Gap
Gender Gap
Geneva Conventions
Geothermal Energy
Geothermal Energy
Germane
Gerrymandering
Global Warming
Globalization
GOP
Government
Government Accountability Office
Grand Jury
Grand Jury Protection
Grassroots
Green Party
Greenhouse Effect
Gridlock
Gross Domestic Product
Gross National Product
Group Libel
Guarantee Clause
Greenhouse Effect
The result of water vapor, carbon dioxide and other atmospheric gases trapping radiant (infrared) energy, thereby keeping the Earth's surface warmer than it would otherwise be. Greenhouse gases within the lower levels of the atmosphere trap this radiation, which would otherwise escape into space, and subsequent re-radiation of some of this energy back to the Earth maintains higher surface temperatures than would occur if the gases were absent.
(Courtesy of Energy Information Administration, U.S. Department of Energy)