That bill contains a limited version of cap and trade, a system of setting a limit on carbon dioxide emissions while allowing companies to buy and sell permits to meet it. (green.blogs.nytimes.com)
A tax on the carbon dioxide emissions of fuels is key to achieving both. (scientificamerican.com)
That is why economists across the political spectrum support an efficient market - based solution that would impose an economy - wide price on carbon dioxide emissions. (corporateknights.com)