The U.S. Supreme Court’s conservative majority appeared inclined to pause the Biden administration’s Good Neighbor Plan, an EPA rule to limit ozone-forming nitrogen oxide emissions from power plants and industrial facilities in certain states.

Columnist Steve Huntoon examines the unintended consequence of reducing aerosol pollution: the acceleration of climate change.

EPA last week took the next step in its campaign to clean up coal-fired power plants, proposing to strengthen the Mercury and Air Toxics Standards.

EPA announced details of its Good Neighbor Plan to slash emissions of smog-forming nitrogen oxides; the rules will affect power plants in 23 states.

The EPA announced tough new emission standards for heavy-duty vehicles: cleaner trucks but not until the 2027 model year and not completely clean until 2045.