Addressing the major arguments used against Global Warming

Addressing the major arguments used against Global Warming (which has been widely accepted as being real and caused by man by both science academies and researchers). It's not a move for higher taxes, it's a move for sustainability and most developed countries have been making an united effort in the last 20 years.
http://en.wikipedia.org/wiki/Scientific_opinion_on_climate_change
http://en.wikipedia.org/wiki/Global_warming_controversy