Oil and gas companies injected hundreds of millions of gallons of hazardous or carcinogenic chemicals into wells in more than 13 states from 2005 to 2009, according to an investigation by Congressional Democrats.

Plaintiffs in Connecticut v. American Electric Power allege that six utilities' emissions are a public nuisance. New York's Attorney General Schneiderman agrees.

Campaigners who fight natural gas altogether, ...had better come up with a real-world game plan for fostering human progress while limiting environmental risks.