'''Global warming''', scientifically speaking, is a worldwide increase in atmospheric temperature. Such increases have alternated with periods of global cooling throughout geological history in regular, natural cycles. Many political activists use the term '''"global warming"''' to refer the anthropogenic global warming theory (AGW), which asserts that human activity such as spewing "[[greenhouse gases]]" is causing more temperature increase than all natural causes combined. | '''Global warming''', scientifically speaking, is a worldwide increase in atmospheric temperature. Such increases have alternated with periods of global cooling throughout geological history in regular, natural cycles. Many political activists use the term '''"global warming"''' to refer the anthropogenic global warming theory (AGW), which asserts that human activity such as spewing "[[greenhouse gases]]" is causing more temperature increase than all natural causes combined. |