Regional Greenhouse Gas Initiative

When California's carbon market launches in November, it will become the second-largest in the world. A test auction conducted this week with 150 of the companies to be involved in the program went off without a hitch.
Aug 31, 2012   Grist
To reduce greenhouse gas emissions by 25% below 1990 levels by 2020, Massachusetts hopes to tap federal funds to help enact a 'Pay As You Drive' auto insurance program to reduce transportation emissions.
Dec 30, 2010   The New York Times - Energy & Environment