Tag Archives: emissions

What Are Partial Zero Emissions Vehicles?

A Subaru Outback PZEV

The designation “Partial Zero Emissions Vehicle” (PZEV) has many people perplexed. Certainly, childhood math would tell us there is no such thing as “partial-zero.” But while most of us are scratching our heads, PZEVs are quickly becoming the norm in gasoline vehicles. In fact, by 2025 all cars sold in America will be PZEVs. But what does this strange designation mean?

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“Safe” Air Isn’t Safe Enough

Cars and trucks at a near standstill on a 9-land highway.

Photo: URBAN TEXTURES, © 1998 PhotoSpin, powerphotos.com. Via Flickr

A new study released this week shows that levels of air pollution that the U.S. Environmental Protection Agency deems safe may not be safe enough. The study, conducted by researchers at the Harvard T.H. Chan School of Public Health, found that long-term exposure to airborne fine particulate matter (PM 2.5) and ozone — even below current standards established by established by the EPA — increases the risk of premature death.

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DuPont’s New Cellulosic Biorefinery

"Shredded Corn Stover" by [Margaret Broeren]

DuPont breaks ground on a new cellulosic biorefinery that will use discarded corn stover waste to create 30 million gallons of biofuel a year. It’s a model they hope will spread around the world.

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Our most popular fuel stories of 2012

"Contemplate" by Dave Butterworth

Have a look at our most popular fuel related posts of 2012. Thanks for your support and happy holidays from Sustainable America!

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Qatar Airways will fuel its fleet with natural gas

Qatar Airways is planning to use domestically abundant natural gas to power it’s whole airline fleet as soon as late 2013.

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By the Numbers

Currently 50 million households suffer from food insecurity, meaning that family members cannot always meet their basic food needs.

10 million people a year could be fed through the recovery of just one-fifth of food waste.

Only 2% of food waste is composted or otherwise recycled—62% of paper is recycled.

Consumers throw out about 40% of the fresh and frozen fish they buy.

The U.S. produced 208 pounds of meat per person in 2009—60% more than Europe.

Low income commuters spend a much higher proportion of their wages on gas—8.6% versus 2.1% at $4 per gallon.

Food prices rose 35-40 percentage points between 2002–2008.

Americans consume 25% of the world’s produced oil, but our nation holds less than 3% of the world’s proven oil reserves.

The International Energy Agency says greenhouse gas emissions rose 3.2% last year, with a 9.3% increase in China offsetting declines in the US and EU.

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