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Cycle of warming and cooling
[[Image:Climate cycle.png|right|thumb|Cycle of warming and cooling]]
'''Global warming''' is the term ascribed to an increase in global average surface temperature.
'''Global warming''' is the term ascribed to an increase in global average surface temperature.
Scientists such as [[Richard Lindzen]], [[Fred Singer]], etc., say that the patterns of global warming are naturally caused. Some other scientists like [[James Hansen]] and [[Michael Mann]] say that the [[Modern Warming Period]] is largely caused by human activity.
Scientists such as [[Richard Lindzen]], [[Fred Singer]], etc., say that the patterns of global warming are naturally caused. Some other scientists like [[James Hansen]] and [[Michael Mann]] say that the [[Modern Warming Period]] is largely caused by human activity.