vehicle emission standards Archives

vehicle emission standards

Cars, Smog, and EPA

Over the past fifty years, EPA has overseen incredible reductions in auto pollution.

This is part of an occasional series of posts about the evolution of pollution standards. Today’s subject is pollution control for new vehicles, which have been known to cause smog since the 1960s. The history of these pollution standards is quite distinctive. At the high temperatures in internal combustion engines, some of the nitrogen in …

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Keep on Trucking

A new rule will clean up exhaust from new diesels, a major health threat.

Last week, EPA finalized its new rule imposing emission limits on new heavy trucks. The new regulation was clearly a massive undertaking. EPA’s formal announcement of the new rule is 1100 pages long. The accompanying summary of comments on the proposed rule and EPA’s responses is another 2000 pages. This is partly due to the …

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Fighting to Preserve California Vehicle Emission Standards

Ted Lamm and Sean Hecht Co-Author Amicus Brief on Behalf of National Parks Groups

Last week, Sean Hecht and I filed an amicus brief with the DC Circuit in the legal challenge to the Trump Administration’s attempt to eliminate California’s authority to apply its own automobile emission standards under the Clean Air Act. (We filed the brief in our individual capacities and not on behalf of our respective institutions.) …

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Trump’s Legal Challenges to the California’s Car Deal

Is there any legal basis for the Trump Administration’s actions?

Prompting rage by President Trump, California and several carmakers entered a voluntary agreement on carbon emissions from new cars that blew past the Administration’s efforts to repeal existing federal requirements. Last week, the Trump Administration slapped back at California. Although there’s been a lot of editorializing about that response, I’ve seen very little about the …

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Climate policy is changing rapidly. Stay in the loop with expert analysis via email Monday - Friday.

Reflections on “Yes they can control the weather.”

Marjorie Taylor Greene is wildly wrong about government scientists controlling hurricanes. There is a rich history of weather modification experiments that make that false claim more dangerous.

Why You Should Read CA’s ExxonMobil Plastic Lawsuit

California’s lawsuit against ExxonMobil for lying about plastic recycling is the latest example of the state using old-fashioned legal tools to address more modern harms.

The Election, Vehicle Emissions, and State Climate Plans

If the California car waiver survives a possible Trump presidency, we may have the overruling of Chevron to thank.

How to Make Trees Worth More Standing Than Cut Down

The Katoomba Group is celebrating 25 years of pioneering new approaches to realizing value in nature. Here’s what we’ve learned.

Climate, Energy, and Environment on the Ballot

Ballot measures in Washington and California are especially important but others are worth noting.

Model Uncertainty in Politics and Climate Policy

The polls could be systematically off, not just due to random error. That’s a worry with climate models as well.

Still Crazy After All These Years

There’s been an alarming growth of conspiracy theories, often antisemitic ones, to explain extreme weather events.

We Need a Circular Economy for EV Batteries

California got close to making suppliers ensure EV batteries are managed responsibly at end of life. Here’s why 2025 should be the year California creates a circular economy for EV batteries.

The Dangerous Embrace of Convenient Narratives Over Inconvenient Truths

As it turns out, Nature doesn’t care what stories you post on social media or spin on TV.

New Environmental Laws Focus on Public Health

Many of the environmental-focused bills that the governor signed this year involve ways to alleviate the health disparities faced by frontline communities.

vehicle emission standards

Over the past fifty years, EPA has overseen incredible reductions in auto pollution.

A new rule will clean up exhaust from new diesels, a major health threat.

Ted Lamm and Sean Hecht Co-Author Amicus Brief on Behalf of National Parks Groups

Is there any legal basis for the Trump Administration’s actions?

Join Our Mailing List

Climate policy is changing rapidly. Stay in the loop with expert analysis via email Monday - Friday.

TRENDING

California’s Low Carbon Fuel Standard has been successful. CARB should update the program without undermining its fundamental features.

The global transformation to an economy fueled by clean energy can’t be stopped. Trump could slow down U.S. progress though.

New CLEE Report Identifies Key Challenges and Opportunities in the State’s Adaptation Funding Landscape

Laws like the Inflation Reduction Act may have more sticking power than regulations.

New CLEE Report Release & Webinar on Wednesday, November 13th at noon PT

Several California laws prohibiting dangerous chemicals from household products go into effect on or after January 1, 2025.

Pretty or scary or brave? There’s a climate costume to suit all tastes and all ages.

Reframing Infrastructure Investments to Realize an Equitable Transition

The Presidential, Senate & House elections will have immense repercussions in terms of energy and environment.

A Trump victory would increase the odds that we will ultimately need to start blocking solar radiation as a last resort to limit climate change.