Stories by Arianna Skibell

Heavy-duty trucks are the largest mobile source of a key precursor to dangerous ozone and particulate matter

The General Services Administration oversees $75 billion in annual contracts

The move would reverberate around the country because more than a dozen other states follow California’s regulations

The announcement unleashes a flood of federal money to states for the construction of a national network of charging stations

Just 30 percent of cars on the road will be electric by 2050 under current policies, the U.S. Energy Information Administration says

A second policy aims to accelerate adoption of electric vehicles

Advocates worry that reduced funds will not go to the communities most in need

Consumers want the racy Mustang Mach-E coupe and the powerful F-150 Lightning pickup truck

The U.S. ships hundreds of thousands of its oldest and dirtiest cars overseas to poorer countries each year