air pollution

An action signed by EPA Administrator Andrew Wheeler removes the current restriction on smog-forming E15 ethanol blends in summer.

As reported by the New York Times, sources familiar with the EPA's plans indicate the agency may use a new model that will count fewer premature deaths as caused by air pollution.

Particulate matter from diesel engines is one of the primary concerns for a system that uses lasers and informs occupants of cabin air quality.

As Washington DC waffles on developing a Green New Deal—or works to torpedo it altogether—LA's environmentalist mayor, Eric Garcetti, signed off on a local Green New Deal for the city on Monday. “Politicians don’t need to look across the aisle to find the answers—they...

Every year, as Earth Day rolls around, we survey the automotive landscape looking for progress in the industry's efforts to reduce emissions and limit global warming. We've identified a lot of progress recently. More than a dozen new electric models are set to go on sale in the coming year, and...

Recommendations could dramatically limit what studies are used to determine safe limits on air pollution, and question the link with mortality.

Ethanol is known as an alternative fuel, and is even renewable. But that doesn't always make it clean. The Environmental Protection Agency, after proposing watered down emissions and fuel economy standards for cars, has now released a proposal to increase the amount of ethanol blended into pump gas...

While Volkswagen has reached a historic settlement and had to buy back hundreds of thousands of its diesel cars in the U.S., it isn’t the only automaker to be investigated for cheating on diesel emissions. Fiat Chrysler recently agreed to recall its Ram and Jeep EcoDiesels and pay owners for...

Science at the EPA has been a topic of much debate, and a lot of turmoil since President Trump took office. In that way, the addition of eight new members to the agency's much discussed Science Advisory Board isn't surprising. What may more surprising to some is the makeup of the new members...

Not only do polluters have lower standards to meet under the Trump administration, they may not really have to meet those standards at all. That's the conclusion of a new study, published by the Washington Post, that shows enforcement activity has fallen drastically in the past two years since...

A new investigative report by the New York Times has revealed the puppeteer pulling the strings in the Trump administration's efforts to undo fuel-economy and emissions improvements: no surprise, the oil industry. Backed by America's largest refiners and organizations tied to or funded by the Koch...

The EPA has loosened or eliminated a lot of regulations since President Trump took office, but last week the agency announced it would tighten regulations on emissions of nitrogen oxides from heavy trucks such as semis. The EPA notes that smog-forming NOx emissions from heavy trucks fell 40 percent...

The EPA has dismissed two panels of outside scientists that advised the agency on particulate matter and ground-level ozone, which have been linked to smog and respiratory problems. Under acting administrator Andrew Wheeler, a former coal-industry lobbyist, analyzing those pollutants will be left...

U.S. emissions of global-warming greenhouse gases fell 2.7 percent in 2017, despite the Trump administration's efforts to revive coal use in the U.S., the EPA announced on Monday. The EPA released data for 2017, showing an even larger 4.5 percent drop in emissions from power plants compared with...

After wiping out plans to continue boosting fuel economy standards earlier this month, the EPA on Tuesday proposed rolling back emissions standards on electric power plants. The new proposed rule, which the EPA calls the "Affordable Clean Energy" rule, would eliminate Obama-era standards that would...

With increasing availability of zero-emission cars over the coming years, when will citizens at large start to question the idea that every vehicle has an "exhaust pipe" that just belches harmful substances into our shared air?

The first major emission controls on motor vehicles were introduced in 1975 with the advent of the catalytic converter. Today's cars emit less than 1 percent of the three "criteria" pollutants that came out of their tailpipes half a century ago. They emit relatively so little carbon monoxide...

First Paris, then a pair of German cities, and now the Eternal City. Two weeks ago, the mayor of Rome announced on her Facebook page that the city would ban diesel cars altogether by 2024. It's not clear whether the ban applies solely to the older, most-polluting diesels as it does already in...

That huge intake of breath you may have heard from across the Atlantic Ocean was the sound of German carmakers gasping at a court decision handed down on Tuesday. After a week's delay in issuing its ruling, a German court decided that individual cities in the country may ban vehicles with diesel...

Last November, the Environmental Protection Agency said it would rescind a rule that banned companies from fitting outdated, older, and dirtier diesel engines into brand-new "glider" chassis-cab trucks. Among the many regulations to limit emissions and other forms of pollution that EPA...