Cars are among the greatest air pollution problems in America. According to the EPA, “Greenhouse gas (GHG) emissions from transportation account for about 28 percent of total U.S. greenhouse gas ...

California built its reputation as a clean-air pioneer not through voluntary action by automakers but through a legal mechanism most Americans have never heard of: a federal waiver that lets one state ...

For years the Environmental Protection Agency has pushed carmakers to reduce how much vehicles contribute to climate change. Today the EPA laid out plans to not just weaken those rules, but end them ...

In cars, pollution doesn’t come from exhaust alone. It also comes from wear and tear on roads, tires, and brakes. According to new research, tiny bits of dust cast off by brake pads may inflict more ...

Add Yahoo as a preferred source to see more of our stories on Google. STORY: This is what a car-free day looks like in Bogota, Colombia's capital. The city banned private cars for a day on Thursday - ...

The president wants to weaken limits on tailpipe pollution. Scientists say it’s driving climate change and taking human lives “every day.” By Lisa Friedman Reporting from Washington President Trump ...

Vickash Mohanka is the chapter director of the Massachusetts Sierra Club. Included in the recent announcement that the Environmental Protection Agency will roll back 31 policies are plans to ...