air pollution

People sit in a park near shipping containers stacked on a container ship at the Port of Los Angeles

Mario Tama/Getty

August 20, 2025

States Can Deliver a Cleaner Freight System Amid Federal Setbacks

Sam Wilson
Senior Vehicles Analyst

This false colour image, acquired by one of the Copernicus Sentinel-3 satellites on 3 August 2025, shows the smoke cloud from the wildfires engulfing skies over Canada and the US. This false colour image, acquired by one of the Copernicus Sentinel-3 satellites on 3 August 2025, shows the smoke cloud from the wildfires engulfing skies over Canada and the US.

Copernicus Sentinel-3 imagery/European Union

August 7, 2025

What We’re Watching: Wildfire Smoke and Trump Administration Mirrors

Erika Spanger
Director of Strategic Climate Analytics

UCS/ChatGPT

June 25, 2025

Impactos ambientales de la inteligencia artificial

José Pablo Ortiz Partida
Director of Innovation and Collaboration

UCS/ChatGPT

June 25, 2025

What Are the Environmental Impacts of Artificial Intelligence?

José Pablo Ortiz Partida
Director of Innovation and Collaboration

Sigmund/Unsplash

June 12, 2025

Big and Backwards on Transportation: Three Things to Know About Congress’s Reconciliation Bill

Steven Higashide
Clean Transportation Program Director

Wonderlane/Unsplash

May 15, 2025

Indirect Source Rules: An Emerging Route Toward Clean Freight

Sam Wilson
Senior Vehicles Analyst

D. Reichmuth/UCS

February 28, 2025

What the Auto Industry Isn’t Telling You About California’s Clean Vehicle Rules

David Reichmuth
Senior Engineer, Clean Transportation Program

S.Wilson/UCS

February 10, 2025

ACT Delivers Cleaner, Efficient, and Cost-Effective On-Road Freight in a Feasible Package

Sam Wilson
Senior Vehicles Analyst

Andrew Stickelman/Unsplash

February 4, 2025

From the Port to Your Porch, Every Part of the Freight System Can Get Cleaner

Steven Higashide
Clean Transportation Program Director

Samuel Girven/Unsplash

January 21, 2025

Rolling Back Vehicle Standards Is Bad for Drivers, the Auto Industry, and Anything that Breathes

Don Anair
Deputy Director & Research Director, Clean Transportation

Melissa Sue Gerrits/Stringer (Getty)

December 17, 2024

No Matter Who’s in Office, the Choice for Cleaner Trucks Is Obvious

Dave Cooke
Senior Vehicles Analyst

Joe Raedle/Newsmakers

October 30, 2024

Trucking Industry Disinformation Will Cost Lives

Dave Cooke
Senior Vehicles Analyst

S. Wilson/UCS

September 17, 2024

Delivery Vans Are Going Electric: Where and Why

Sam Wilson
Senior Vehicles Analyst

Daimler Truck North America

June 3, 2024

What Will the Advanced Clean Fleets Rule Do for California?

Michele Canales
Western States Policy Advocate

Caroline Brehman/EPA, via Shutterstock

June 3, 2024

What You Need to Know about Advanced Clean Fleets: Funding, Flexibility, and FAQs

Sam Wilson
Senior Vehicles Analyst

Mario Tama/Getty Images

May 13, 2024

The State of the Air in 2024? Not Great

Ángel S. Fernández-Bou
Senior Climate Scientist

Remnants of burned houses in a neighborhood in Paradise, California, 8 months after the 2019 Camp Fire.

Frank Schulenburg/Wikimedia Commons

April 29, 2024

New California Legislation Would Help Us Better Understand Wildfire Health Impacts

Daniel Barad
Western States Policy Manager

Sam Wilson/UCS

April 2, 2024

EPA Grant Program Helps to Accelerate Transition to Cleaner Ports

Sam Wilson
Senior Vehicles Analyst

Jon Tyson/Unsplash

March 29, 2024

EPA’s Final 2027-2032 Truck Rule Risks Leaving Communities Behind

Dave Cooke
Senior Vehicles Analyst

Nick Iannaco/UCS

March 18, 2024

EPA Strengthens Emissions Controls for Facilities Emitting Cancer-Causing Ethylene Oxide

Darya Minovi
Senior Analyst

Commuters stand on a train platform in New York City, with a train approaching

Nic Y-C/Unsplash

February 28, 2024

Investing in Public Transit Is Investing in Public Health

UCS Science Network

Hush Naidoo Jade Photography/Unsplash

December 21, 2023

Diesel is the Reason for the Sneezin’: Cleaner Holiday Deliveries are on the Horizon

Sam Wilson
Senior Vehicles Analyst

President Biden vetoes S.J. Res. 11 in June, 2023.

White House/Flickr

November 28, 2023

Biden Administration Faces Stark Choice on Its Biggest Climate Policy

Dave Cooke
Senior Vehicles Analyst

UCS

August 22, 2023

Extreme Heat Makes Electricity More Expensive, More Polluting, and Less Reliable

John Rogers
Associate Director, Energy Analytics