This report provides the first national-level approximation of priority sources and actions to address air pollution while maximizing synergies with climate mitigation and managing trade-off challenges. The study uses mean population exposure as the best approximation of air quality impact...

The Montreal Protocol is considered the most successful international environmental treaty. Its effectiveness has made it a model for other agreements, but its power goes beyond protecting the stratospheric ozone layer. Much of the implementing legislation appears in Title VI of the Clean Air...

In the spring of 2007, the U.S. Supreme Court ruled in Massachusetts v. EPA that the U.S. Environmental Protection Agency (EPA) must promulgate automobile tailpipe greenhouse gas emission standards under Section 202 of the Clean Air Act (CAA). American environmentalists hailed the Supreme...

The economic literature supports the case that an emissions excise tax is one of the most cost- effective approaches to reducing greenhouse gas (GHG) emissions. The United States Environmental Protection Agency (EPA) has begun the process of regulating GHG emissions under section 111(d) of the...

Urban India, particularly metros, is a major hotspot of air pollution with a PM2.5 concentration level ranging above the permissible limits defined by the WHO for most of the year. Unsurprisingly, special efforts have been made by the Government of India in recent years to improve air quality....