The controversy over the Clean Air Act is worth understanding because it reveals a pivotal development that EPA and the environmental groups would prefer to conceal: the 40-year-old act is no longer a sensible way to regulate large-volume conventional air pollutants such as ozone and particulate matter.

H.R. 10 requires Congress to vote on the rules which unelected agency officials issue under vague mandates from Congress. This is the right way to find out which regulations the voters desire.

On November 29, the U.S. Supreme Court will hear oral argument in Massachusetts v. Environmental Protection Agency (EPA). In this much-watched case—part of a broader campaign for the regulation of carbon dioxide—several states and environmental organizations have argued that the EPA must regulate CO2 under the Clean Air Act.

A new generation of environmental assessment and forecasting tools has begun to emerge, replacing the sensational Malthusian gloom-and-doom reports of the 1970s that were mostly proven wrong. Panelists at this event will examine several of these efforts, including the Millennium Ecosystem Assessment, the Pilot Environmental Performance Index, the State of...

The Environmental Protection Agency will celebrate the fortieth anniversary of the Clean Air Act, but the Clean Air Act cannot handle today's pollution problems and time to really celebrate will come when the Clean Air Act is itself reformed to make it capable of dealing with today's challenges.

A number of rationales for renewable electricity support usually are offered in support of those public policies; whatever their surface plausibility, they are deeply problematic both conceptually and in terms of the available data.

Reforming the Clean Air Act’s treatment of conventional pollutants would both ease political resolution of the greenhouse gas issue and improve control of conventional pollutants.

The Warner and REINS proposals are excellent ideas but, at least in the area of the environment and the economy, are no substitute for reforming the underlying statutes.