An assessment panel created by the [[United Nations]] is 90% sure that most [[global warming]] is caused by human beings.
The idea that human activities such as the combustion of [[fossil fuels]] can significantly warm the earth's atmosphere is called the [[Anthropogenic global warming theoryrunaway greenhouse effect]].
==TheoriesRelation to current climate change==
The '''anthropogenic global warming theory''' is one of several explanations for the slight warming of the earth's [[atmosphere]] recorded since the middle of the 19th or 20th centuries.
[[category:earth science]]
[[category:ecology]]
==Scientific evidence==