emissions

 
Combustion engines: high emissions from short commutes a huge challenge

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 diesel—pose particularly tough emission problems. That's because the exhaust aftertreatment systems have to warm up... read more

July 11, 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


 
Electric-car wells-to-wheels emission equivalencies in MPG, May 2017 [Union of Concerned Scientists]

Electric cars cleaner than any gas-only car for 97 percent of U.S. drivers

Electric cars have no tailpipe emissions when running. But unless they're charged entirely on renewable energy—still statistically unlikely today—there are... read more June 5, 2017 by


 
Electric cars dominate U.S. climate-friendly vehicles  [data: U.S. EIA; map: Climate Central]

Electric cars are cleaner than hybrids in most places: mapped once again for your convenience

The question is a reasonable one: electric cars may be zero-emission, but what about the electricity to recharge them? While renewable energy is growing globally, burning... read more May 31, 2017 by


 
Volkswagen Plant, Wolfsburg, Germany (photo by Richard Bartz)

Lasting legacy of VW diesel scandal: EU gets serious about testing

The Volkswagen diesel scandal left lasting imprints on the entire automotive industry, and may have changed the way regulators look at vehicles using the fuel forever. That's... read more May 31, 2017 by


 
Donald Trump

Two words the Trump Administration can't say: climate change

During President Donald J. Trump's half-hour meeting with Pope Francis at the Vatican yesterday, the pope gave the president a copy of his 2015 encyclical calling for urgent... read more May 25, 2017 by


 
2014 Ram 1500 EcoDiesel, Bear Mountain, May 2014

Justice Department sues Fiat Chrysler over diesel emissions (update)

The U.S. Justice Department sued Fiat Chrysler Automobiles yesterday over allegations that diesel engines in its light-duty trucks included equipment to defeat Environmental... read more May 24, 2017 by


 
Mark Webber driving a 2016 Porsche 919 Hybrid in London

Cities lead global push for cleaner, zero-emission cars

Carlos Ghosn, the man behind the Nissan Leaf electric car and now the chairman of the Renault Nissan Alliance, isn't the first to say it. But his recent comment that cities... read more May 23, 2017 by


 
Gas pump

Could California climate-change rules raise gas price enough to backfire?

California has by far the most aggressive climate-change policies in the nation, and the state is a global leader in plans to reduce carbon-dioxide emissions. It's also the... read more May 19, 2017 by


 
Smog obscures George Washington Bridge, 1973 [From EPA Documerica series]

EPA gets 29,000 comments on proposed elimination of environmental rules

Much of the news out of Washington, D.C., these days has to do with the possibility of political scandal. But the wheels of government keep turning, and significant changes... read more May 18, 2017 by


 
Freightliner Inspiration Truck self-driving truck concept

Real-world diesel emission study shows latest standards must be applied to heavy trucks

When a major lobbying group issues a statement replying to an academic study the same day that study first hits the media, you know it's major. On Monday, the Diesel... read more May 17, 2017 by


 
2018 Honda Clarity Plug-In Hybrid debuts at 2017 New York auto show

Would weaker EPA rules kill advanced start-stop hybrid systems for U.S.?

Today's political climate has made for fluid motion in regulations, and corporate average fuel economy targets haven't been left out. Suppliers and automakers have already... read more May 16, 2017 by


 
The White House, Washington, D.C.  [Creative Commons license by dcjohn]

EPA's Ann Arbor test lab threatened; emission tests in the balance

The 436 scientists who spend their days testing new vehicles and enforcing environmental rules at the National Fuel Emissions Lab in Ann Arbor, Michigan, face a very... read more May 16, 2017 by


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

Will Trump EPA target CA electric-car, emissions rules? Not yet, maybe; here's why

California began regulating vehicle emissions within its boundaries before the Environmental Protection Agency was even a gleam in President Richard Nixon's eye. Since that... read more May 15, 2017 by


 
Chrome exhaust pipe

Ruling that EPA must regulate carbon emissions: now 10 years old

Anniversaries often provide an opportunity to reflect on important past events, review what has happened since, and reflect upon the future. April 2 of this year marks the... read more May 11, 2017 by


 

 
 

 
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