emissions

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The state of Michigan has hit a roadblock in its efforts to cut down on air pollution in Wayne County.

U.S. Steel is suing the state over a rule that requires the company to submit a plan for meeting sulfur dioxide standards at its Great Lakes Works plant in Ecorse.

Michigan has been trying get the Pittsburgh-based company and several others in the Detroit-area to scale back emissions since 2010, when a federal review found that levels were above standards.

General Motors

A law firm is suing General Motors, claiming the automaker's diesel Cruze sedans cheat on emissions tests, just like Volkswagen's diesels. 

Volkswagen is in big trouble for deliberately installing software that turns off emissions controls during normal driving, and on during fuel economy testing.

The U.S. Environmental Protection Agency sued Volkswagen over the deceit. The Associated Press reports an announcement of a settlement will be made early next week.

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Updated 2/8/16 at 1:32 pm and 2/10/16 at 2:50 pm

Many companies are making their carbon emissions public, to show they are doing their part to fight climate change.

But new research by Lux Research indicates most companies in the U.S. are either underestimating or overestimating their emissions.

Ory Zik is Vice President of Analytics for Lux Research.  He says estimating one's own carbon emissions is very difficult.  That's because electricity moves from region to region on grids.

Tracy Samilton / Michigan Radio

In his first U.S. press conference since being named CEO of Volkswagen, Matthias Mueller said he planned to submit a "package" of solutions to remedy the company's deliberate installation of devices that disable emissions controls in 600,000 diesel vehicles in the U.S.

Volkswagen also installed the devices in millions of its vehicles globally.

"It is not only our cars we have to fix," Mueller told a crowd of automotive reporters Sunday night, "we know we have to repair our credibility, too."

Porsche

The U.S. Environmental Protection Agency says it has discovered more "defeat devices" in vehicles with diesel engines made by Volkswagen.

In September, the EPA said it had discovered emissions cheating in 482,000 VW and Audi diesel cars, which were equipped with software that could detect when there was an emissions test happening.  The cars' emissions controls would turn on for the test, and turn off during normal driving.

VW showed off their Gold TDI Clean Diesel at the 2010 Washington Auto Show. The company has since admitted to evading emissions standards for the last seven years.
wikimedia user Mariordo / http://michrad.io/1LXrdJM

Today Volkswagen’s top U.S. executive is facing the wrath of Congress.

The hearing before a congressional oversight panel is in response to VW’s admission that is has been cheating on U.S. diesel emissions tests for the past seven years.

Last year General Motors CEO Mary Barra was lambasted by a congressional panel over GM's ignition recall scandal, and the Detroit News’ Daniel Howes expects today will be no easier for VW U.S. chief Michael Horn.

There’s no other way to look at it: Volkswagen cheated and lied to its customers.

The German automaker admitted to cheating on the US emissions tests for half a million of its diesel vehicles.

CEO Martin Winterkorn has stepped down and more heads are expected to roll by week’s end, but Detroit News business columnist Daniel Howes says this isn’t even the end of the beginning.

Researchers are going to find out how well rubberized asphalt will resist potholes.
Steve Carmody / Michigan Radio

A group of researchers at Michigan Technological University is conducting tests to find out if traditional asphalt mixed with rubber from scrap tires could make better roads in Michigan.

The research, led by civil and environmental engineering department chair David Hand, has been granted $1.2 million from the Michigan Department of Environmental Quality.

Professor Zhanping You has been studying the technology of rubberized asphalt for eight years. He says rubber-added asphalt can make roads more durable and make life easier for drivers.

User: Kathleen Franklin/Flickr

Researchers have found that food waste has a big impact on the heat-trapping gasses we release into the environment.

Marty Heller is a senior research specialist with the Center for Sustainable Systems at the University of Michigan.

In a new study, he and U of M's Greg Keoleian looked at the greenhouse gas emissions involved with the production of the food we eat and the food we waste.

“If we look at the greenhouse gas emissions associated with that food waste, it is equivalent to adding an additional 33 million average passenger vehicles to our roads every year,” Heller said.

Heller and Keoleian studied the emissions associated with about 100 different types of food. They discover that certain types of foods have the highest greenhouse gas emissions associated with their production.

"Typically we see a very distinct difference between foods that are animal based — meats, dairy —and foods that are plant based," Heller said.

"To a large extent that's because of the additional feed that is required to keep an animal alive and sort of their conversion efficiency of the feed that they consume."

He also found that some of those animals, cows in particular, emit a great deal of methane which is a very potent greenhouse gas emission.

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Emissions from new vehicles dropped 12% between 2007 and this year, according to a new index by the University of Michigan Transportation Research Institute. 

But it’s unclear if that trend will continue in the future.

For decades, there was little increase in the fuel efficiency of the new cars people bought. 

That changed starting in 2007.  Consumers turned to more fuel-efficient cars and they drove fewer miles, lowering overall emissions. 

But it probably wasn’t environmental concerns that caused the shift.