The '''anthropogenic global warming theory''' (AGW) claims that [[human being]]s are responsible for most of the slight [[warming trend]] seen since the [[Little Ice Age]]. It is highly favored by liberals, as it provides justification for [[carbon tax]]es and the [[Kyoto Protocol]]. The consensus of climate scientists, however, is that nearly the recent increase in global air temperature is naturally caused.{{Citation needed}}
The AGW theory is one explanation for the 1.5 degrees [[Fahrenheit|F]] of warming of the air near the earth's surface recorded since 1850.<ref>[http://www.cru.uea.ac.uk/cru/info/warming/ Climatic Research Unit Sheet #1]</ref> However, [[Greenpeace]] co-founder [[Patrick Moore]] said [[global warming]] is most likely a "natural phenomenon," because there is no [[proof]] of man-made global warming, and suggested that "[[alarmism]]" is driving politicians to create bad [[environmental]] policies.<ref name=greenpeace>Jonathon M. Seidl. [https://www.theblaze.com/stories/greenpeace-founder-questions-man-made-global-warming/ Greenpeace Founder Questions Man-Made Global Warming], ''[[The Blaze]]'', Posted on January 20, 2011.</ref>