emissions

 
For pickup trucks, more than half all fuel savings come in 2022-2025 CAFE rules

For pickup trucks, more than half all fuel savings come in 2022-2025 CAFE rules

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... read more

August 9, 2017 by -
 
The White House, Washington, D.C.  [Creative Commons license by dcjohn]

U.S. government climate scientists restricted, sidelined, limited

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... read more July 28, 2017 by


 
Diesel taxis in London (Image by Flickr user Lars Ploughmann, used under CC license)

UK to ban diesel, gasoline car sales by 2040; follows France, Norway, Holland bans

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... read more July 27, 2017 by


 
2014 Audi A6 2.0 TDI Ultra

European commissioner warns against cities' diesel bans, fears market collapse

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... read more July 27, 2017 by


 
2018 Mercedes-Benz CLA-Class

Next Mercedes-Benz small cars to get even tinier engines

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... read more July 26, 2017 by


 
2013 Audi TDI range

Audi, Mercedes now updating European diesels for emissions; more to come?

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... read more July 25, 2017 by


 
Felix Kramer and his fleet: Nissan LEAF, Chevy Volt, Plug in Prius

Green Car Glossary: vehicles, emissions, fuels, electric cars, powertrains energy (updated)

As rules to boost fuel economy and lower carbon emissions in vehicles around the world continue to stiffen, acronyms like EREV, CNG, and MPGe are becoming more and more... read more July 24, 2017 by


 
2014 BMW 328d

EU investigating diesel collusion among Audi, BMW, Mercedes, Porsche, VW: report

As numerous political probes over the years have famously shown, once investigators dig into the circumstances around an alleged crime, anything can happen. The September... read more July 21, 2017 by


 
Freightliner Inspiration Truck self-driving truck concept

Several states want far cleaner diesel trucks; EPA to start rulemaking?

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... read more July 16, 2017 by


 
Semi trailer

Diesel trucks with latest emission controls displacing dirtier, older ones on U.S. roads

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... read more July 14, 2017 by


 
Chrome exhaust pipe

Combustion engines: high emissions from short commutes a huge challenge

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... read more July 11, 2017 by


 
Toyota 'Project Portal' proof-of-concept hydrogen fuel-cell powered semi tractor, for Port of LA

Missing piece in global vehicle emission puzzle: heavy trucks

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... read more July 7, 2017 by


 
Nicolas Hulot, French minister of ecological transition, announces 2040 ban on vehicles with engines

France plans to ban all gasoline, diesel vehicles by 2040

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... read more July 6, 2017 by


 
Gas pump

States have battle plan if Trump rolls back fuel-economy, emission rules

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... read more June 22, 2017 by


 
A semi-autonomous BMW 5 Series, on the highway outside of Munich

Even BMW's hometown may ban older diesel cars

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... read more June 20, 2017 by


 
Golden Gate Bridge, connecting San Francisco and Marin County, California

Trump EPA backs away from attacking California emission waiver

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"... read more June 19, 2017 by


 

 
 

 
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