Here is an excellent article by Michael Levy, senior fellow for energy and the environment at the Council on Foreign Relations: “Fracking and the Climate Debate,” published in the journal Democracy. A well-reasoned and balanced summary of the debates over the role of natural gas in our energy future and its potential impact on our climate. Lengthy, but well worth reading.
Levy gives a good history of recent remarkable changes in the roles of coal and natural gas in US energy:
Between 1999 and 2005, the United States had added the equivalent of 200 nuclear power plants’ worth of natural gas-fueled electricity plants, even as U.S. coal-fired capacity actually fell. But by 2007, with natural gas prices rising, the U.S. government predicted a reversal: Over the next two decades, coal-fired power plants would be built at a furious pace, while natural gas would stagnate. This would be disastrous for U.S. greenhouse gas emissions: By 2030, it was predicted, the fleet of coal-fired power plants would belch three billion tons of carbon dioxide into the atmosphere each year, massively raising U.S. greenhouse gas emissions. …