emissions

Almost two years ago, the Volkswagen diesel emission scandal burst into public view, and nothing has been quite the same since then. The news that VW Group engineers had deliberately cheated on eight years of emission tests for the "clean diesels" sold by Volkswagen, Audi, and Porsche sent...

Automakers appear to have united behind a surprising position: reviews of emission rules should not involve scrapping the current standards. The Alliance of Automobile Manufacturers, a lobbying group that represents automakers building cars in the U.S., has suggested the Trump administration should...

Sometimes, when science and technology issues have economic or political consequences, incorrect or misleading information and analyses can be propagated through the media, leading both decision makers and the public astray. A piece published in April by Forbes, covering the effects of the 2022...

It has been almost two years since Volkswagen changed the prospects for diesel-powered cars when it admitted to eight years' worth of cheating on emissions tests for its so-called clean diesel vehicles. The effects of the German automaker's diesel scandal are still unfolding today, not only in the...

Predictions on the future of global energy vary greatly, but many analysts largely believe that peak demand for the oil industry is coming relatively soon. The world's largest oil companies, however, see it differently: they say their business will only continue to grow through the year 2040. Exxon...

Months into Donald Trump's presidency, it is clear the administration has worked diligently to downplay the role of science in setting policy on energy. Some moves to diminish scientists' roles have been more evident than others, but a new report details what has gone on behind the scenes. In...

The United Kingdom will follow in the footsteps of some European countries as it announced plans to ban the sale of gasoline- and diesel-powered cars by the year 2040. The initiative closely follows a similar announcement from France, which also declared 2040 as the year it will phase out...

The warning came even before last week's plans for updates to 9 million European diesel cars by German luxury makers Audi and Mercedes-Benz were announced. In a letter sent to the transport ministers of European Union countries, EU industry commissioner Elzbieta Bienkowska warned that proposed bans...

Not so many years ago, a 1.2-liter engine would only have been found in the U.S. in the smallest and least impressive of subcompact cars. It might have been a 3-cylinder, and certainly wouldn't have had even 100 horsepower. But times change, and engines of that size will soon be found even in the...

Both Mercedes-Benz parent Daimler and Volkswagen Group have approved new plans to retrofit older diesel-powered vehicles with new software at no cost to owners. The largest number of such cars will be in Europe. The news comes amid the latest allegations surrounding German automakers and their...

Almost one-third of the heavy trucks on U.S. roads now use the most stringent emission-control systems, which radically reduce their emissions of nitrogen oxides, soot, and other pollutants. Commercial trucks log much higher annual mileage than passenger cars, especially the semi tractors that haul...

The phrase "clean diesel" has largely fallen into ill repute after it was associated with Volkswagen's diesel emission deceit, but the latest diesel technology can honestly be described with such a phrase. Semi trucks using the latest-generation diesel technology have reached a new...

Drivers in the U.S. have longer commutes than those in Europe and Asia, on average. In the U.K., short commutes in vehicles with combustion engines—whether gasoline or diesel—pose particularly tough emission problems. That's because the exhaust aftertreatment systems have to warm up...

A global push to reduce vehicle emissions and create cleaner air for future generations has been underway for half a century now. However, while many governments around the world have introduced lower emission and higher fuel-efficiency standards for passenger cars, another large contributor to...

To most North Americans, the idea of banning all vehicles with internal-combustion engines seems unthinkable. Filling up with gasoline (or diesel) is as American as are dispersed low-density suburbs without mass transit, bike paths, or even sidewalks. Europeans, more of whom live in cities and most...

The best analog to EPA administrator Scott Pruitt's latest action might be for the U.S. Geological Survey to undertake a "scientific critique" of theories that the world is round. After all, numerous authoritative sources over the years have raised doubts that the Earth is not flat. Surely their...

Electric vehicles shouldn't be considered all-out carbon footprint saviors, but they can legitimately be viewed as the great minimizers. The benefits of electric vehicles over those with internal-combustion engines are vast, but a strange new study is making rounds that claims electric cars are...

The Trump Administration has had a challenging start on numerous fronts, but its work to slash emission rules and eliminate regulations continues. The EPA administrator, climate-science denier Scott Pruitt, has said he isn't "currently" planning to target California's ability to set its own...

Diesel-powered vehicles are facing a tough road ahead as more European cities move to ban older, dirtier, oil-burning cars. Diesel has long been the preferred fuel of European drivers thanks to its efficiency and lower carbon dioxide levels. However, mounting research has shown diesel-powered cars...

Sometime between March 1 and 7, a specific page vanished from the website of the U.S. Environmental Protection Agency. Amidst coverage of the removal of the word "science" from the mission statement of the EPA's Science and Technology Office, it went largely unnoticed. First posted in December...