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The gas chamber was originally introduced to provide a more humane method of execution than hanging. (source: Gas chamber)

Featured Article: Greenhouse gas

Pattern of absorption bands created by greenhouse gases in the atmosphere and their effect on both solar radiation and upgoing thermal radiation
Greenhouse gases (GHGs) is the name given to a number of gases present in the earth's atmosphere which reduce the loss of heat into space and therefore contribute to global temperatures through the greenhouse effect. These gases are essential to maintaining the temperature of the Earth and without them the planet would be so cold as to be uninhabitable. The most important greenhouse gas is water vapor which creates clouds. The vast bulk of this is produced by the natural process of evaporation of water from the sea. An excess of greenhouse gases can raise the temperature of a planet to lethal levels.

Popular Article: Marshall Plan

Map of Europe showing countries that received Marshall Plan aid. The red columns show the relative amount of total aid per nation
The Marshall Plan (from its enactment, officially the European Recovery Program (ERP)), was the primary plan of the United States for rebuilding the allied countries of Europe and containing communism after World War II. The initiative was named for Secretary of State George C. Marshall and was largely the creation of State Department officials, especially William L. Clayton and George F. Kennan.

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