==Relation to current climate change==
The '''anthropogenic global warming theory''' is one the best of several explanations for the slight warming of the earth's [[atmosphere]] recorded since the middle of the 19th or 20th centuries.
The theory enjoys broad based political support from Liberals, Greens and the US [[Democratic Party]], and theory supporters frequently assert the existence of a "[[scientific consensus]]" favoring their viewpoint (see [[Politics of global warming]]).