There is significant momentum behind natural gas extraction efforts in the United States, with many states embracing it as an opportunity to create jobs and foster economic strength. Natural gas extraction has also been championed as a way to move toward energy independence and a cleaner energy supply. First demonstrated in the 1940’s, hydraulic fracturing is now the predominant method used to extract natural gas in the U.S.
Transportation is one of several major sectors that contribute to climate change. Globally, the sector's 25% share of man-made carbon dioxide (CO₂) emissions is similar to its share of energy consumption. Because liquid fuels are so well suited for powering cars, trucks, boats and aircraft, transportation is uniquely reliant on oil, which is the natural resource most well suited for producing liquid fuels.