Changes

[[Image:RobinsonWhatWarmsTheEarth.gif|right|frame]]

{{inuse}}[[Image:RobinsonWhatWarmsTheEarth.gif|right|frame]]

'''Global Warming''' is any increase in average air temperature at the [[Earth]]'s surface over a period of decades or more. Since 1989, advocates have clashed on the issue of whether human beings are more responsible than nature for  modern periods of global warming; see "[[greenhouse warming]]" and [[global warming theory]].<ref>Some people predicted "global warming," which has come to mean extreme [[greenhouse warming]] of the atmosphere leading to catastrophic environmental consequences. [http://www.junkscience.com/news/robinson.htm]</ref>

'''Global Warming''' is any increase in average air temperature at the [[Earth]]'s surface over a period of decades or more. Since 1989, advocates have clashed on the issue of whether human beings are more responsible than nature for  modern periods of global warming; see "[[greenhouse warming]]" and [[global warming theory]].<ref>Some people predicted "global warming," which has come to mean extreme [[greenhouse warming]] of the atmosphere leading to catastrophic environmental consequences. [http://www.junkscience.com/news/robinson.htm]</ref>