During the early 1970s, the air in many American cities was … brown. Pollution muddied clear skies and sickened people across ...

The Trump administration has granted nearly 70 coal-fired power plants a two-year exemption from federal requirements to ...

In an unprecedented move, the Trump administration established an electronic mailbox to allow the regulated community to request a ...

The Labadie Energy Center and the Sioux Energy Center in Missouri will have two extra years to limit emissions of mercury and ...

A West Texas oil executive will go to prison for violating laws meant to protect workers — actions that led to the deaths of ...

States will have fewer compliance problems with coal-fired power plants and other sources of haze-forming emissions like sulfur dioxide and soot.

Canceled grants and shifting federal priorities are halting progress — and prompting a legal fight to protect climate initiatives and health.

In nearly 30 years, the United States has never failed to send the United Nations its data on planet-warming pollution. This ...