Changes

Points #2 and point #3 are more controversial, although widely accepted by scientists. Points #3 is the one most attacked by global warming skeptics.  

Points #2 and point #3 are more controversial, although widely accepted by scientists. Points #3 is the one most attacked by global warming skeptics.  

Point #4 is what the political and international debate are about. Both climate change itself, and the very large-scale actions that are proposed to combat it, would have enormous economic effects with identifiable winners and losers, resulting in an intense debate. For example, since the industrialized nations emit most of the CO₂, if it were agreed that these emissions needed to be reduced sharply, the burden would fall much more heavily on these nations than on undeveloped nations.

Point #4 is what the political and international debate are about. Both climate change itself, and the very large-scale actions that are proposed to combat it, would have enormous economic effects with identifiable winners and losers, resulting in an intense debate. For example, since the industrialized nations emit most of the CO₂, if it were agreed that these emissions needed to be reduced sharply, the burden would fall much more heavily on these nations than on undeveloped nations. _{citation needed}

== Al Gore and politics ==

== Al Gore and politics ==