Clean Air Act
How Much Has California's War on Air Pollution Reduced Asthma Rates?
Los Angeles used to be one of the most polluted cities on the planet. After decades of improvements, pollution levels are ticking up again.
'We're Working Harder': Fact-Checking Trump's Event on His Environmental Record
President Trump mentioned clean air, emissions, and the Green New Deal, but failed to bring up climate change at his environmental event Monday.
How Humanity Can Solve Our Crisis of Air Pollution
A new book chronicles the rise of extreme air pollution—and the fixes that are helping to clean up the atmosphere
California Could Lose Its Fuel Efficiency Waiver. What Would That Mean for the Country?
Some state legislators seem to agree that California's standards are what's in the United States' best interest.
The Trump Administration Releases Its Plan to Roll Back Fuel Efficiency Standards
The plan would end efforts to make cars and trucks average more than 50 miles per gallon by 2025.
Fifteen States Are Suing the EPA for Violating the Clean Air Act
The coalition of attorneys general argue the Trump administration has failed to fulfill its legal obligation to control methane emissions.
The EPA Plans to Weaken Fuel Emissions Standards. California Plans on Fighting Back.
The effect of lax federal fuel standards on the climate fight depends largely on the fate of the California waiver.
Lawmakers: You Don't Have to Choose Between Cleaning the Air and Stabilizing the Climate
A new study tells us how we can have both.
Smoke From Bigger, Hotter Wildfires Can Inflame Health Problems for Thousands of Miles
Wildfires may be harming the health of people who live hundreds or thousands of miles from the flames.
Why Does the Coal Industry Treat Old, Dirty Power Plants Like National Treasures?
Dear coal industry, stop reminiscing over outdated power plants. They’re holding you—and us—back.