Over the past five decades, the U.S. government has enacted laws and developed regulations to respond to actual and threatened releases of hazardous substances. This article describes a relatively understudied component of the nation's response capability: the Superfund Emergency Response and...

Despite several decades of government policies to promote energy efficiency, estimates of the costs and benefits of such policies remain controversial. At the heart of the controversy is whether there is an "energy efficiency gap," whereby consumers and firms fail to make seemingly positive net...