Far better would be limiting demand for high - emissions crude oil sources, through global carbon taxes. (planet3.org)
However, while exemptions may in effect mean lower carbon taxes in other countries, this does not change the fact that Singapore's S$ 5 tax, or US$ 3.80 at time of writing, is on the lower end of the spectrum of global carbon tax rates. (eco-business.com)
Guardian: Oliver Tickell: Don't let the carbon market dieThe Copenhagen climate change conference achieved too little, but a modest global carbon tax would make amends.» (wattsupwiththat.com)