Harvard Magazine: The United States is wasting more than $4 billion a year by giving oil and gas companies tax breaks that do not benefit consumers or the economy, says Joseph Aldy, assistant professor of public policy at the Kennedy School of Government and a former special assistant to the president for energy and environment. This special treatment for the fossil-fuel industry, he points out, adds to the national debt and maintains the countrys dependence on a finite natural resource that produces greenhouse gases....