The United States will need new legislation to achieve its long-term target of reducing greenhouse gas (GHG) emissions by more than 80 percent by 2050.

A growing body of evidence shows that economic growth is not in conflict with efforts to reduce emissions of greenhouse gases. Experience at the state and national levels demonstrates that well-designed policies can reduce

This study focuses primarily on evaluating and reducing upstream methane emissions in the natural gas sector. This has two important implications. First, this paper in no way aims to diminish the urgent need to achieve GHG emissions reductions from other segments of the economy.