Thank you!
Your support is sustaining the future of local news in our communities.

Why do European diesel cars get better mileage?

Dear EarthTalk: I don’t understand why there are many European diesel cars with very high mileage ratings that are not available in the United States. Can you enlighten?

John Healy

Fairfield, Conn.

Different countries do have differing standards in regard to how much pollution gasoline and diesel automobile engines are allowed to emit, but the reason you see fewer diesel cars in the United States is more of a choice by automakers than the product of a decree by regulators on either side of the Atlantic.

Since the advent of the automobile age in the United States, gasoline has been king of the road; today upward of 95 percent of passenger cars and light trucks on American roads are gas-powered. And the federal government has done its part to keep it that way, taxing diesel at a rate about 25 percent higher than gasoline. A recent assessment by the American Petroleum Institute, an oil industry trade group, found that federal taxes accounted for 24.4 cents per gallon of diesel but only 18.4 cents per gallon of gasoline.

In Europe, where in many regions about half of the cars on the road run on diesel, these tax incentives are flip-flopped, with diesel drivers reaping the economic benefits accordingly.

But according to Jonathan Welsh, who writes the “Me and My Car†Q&A column for The Wall Street Journal, interest in diesels — which typically offer better fuel efficiency than gas-powered cars — has gained significant momentum in the United States in recent years given the uptick in gasoline prices. The popularity of diesels also surged, albeit briefly, in the mid-1970s after the United States suffered its first “oil shock†that sent gas prices through the roof. But gas prices settled down and so did American fervor for diesels at that point.

Today, though, with so much emphasis on going green, diesel cars — some of which boast similar fuel efficiency numbers as hybrids — are on the comeback trail in the United States. Recently passed regulations require diesel fuel sold in the United States today to have ultra low emissions, which appeals to those concerned about their carbon footprints and other environmental impacts. Also, the increased availability of carbon-neutral biodiesel — a form of diesel fuel made from agricultural wastes that can be used in place of regular diesel fuel without any engine modifications — is convincing a whole new generation of American drivers to consider diesel-powered cars. Right now only Volkswagen, Mercedes and Jeep sell diesel-powered cars in the United States, but Ford, Nissan and others plan to launch American versions of diesel models already successful in Europe within the next year.

Meanwhile, the U.S. Coalition for Advanced Diesel Cars, a trade group that represents several automakers as well as parts and fuel suppliers, would like to see the U.S. government increase incentives for American drivers to choose diesel-powered engines by leveling the fuel taxation field — so gasoline and diesel could compete fairly at the pump — and by boosting tax breaks on the purchase of new, more fuel-efficient diesel vehicles. One hurdle is the relative lack of filling stations across the United States with diesel pumps, but as such vehicles become more popular, filling stations that don’t already offer them can relatively easily add a diesel pump or two.

CONTACTS: American Petroleum Institute, api.org; U.S. Coalition for Advanced Diesel Cars, cleandieseldelivers.com.

Dear EarthTalk: What does “carbon neutral†really mean? And is it really possible to live in such a manner without just resorting to buying carbon credits?

Vera Hoffman

Seattle, Wash.

Carbon neutral is a term that has sprouted many definitions, and how to achieve it has spawned numerous interpretations, too. According to the New Oxford American Dictionary, which made carbon neutral its 2006 “Word of the Year,†it involves “calculating your total climate-damaging carbon emissions, reducing them where possible, and then balancing your remaining emissions, often by purchasing a carbon offset.â€

But the term is really so 2006. Today’s term, “climate neutral,†complicates the issue. Tracking carbon is great, but carbon dioxide (CO2) is only one of several greenhouse gases that contribute to global warming, says the 2008 publication, “Kick the Habit: A U.N. Guide to Climate Neutrality,†by the United Nations Environment Program. CO2 makes up some 80 percent of the world’s greenhouse gases, but five others — nitrous oxide, hydrofluorocarbons, perfluorocarbons, sulphur hexafluoride and methane — also contribute. Limits on all six gases were called for by the Kyoto Protocol international climate treaty.

Semantics aside, whether a person can live in a climate-neutral manner is a question of lifestyle choices and making improvements over time. Start your climate neutral quest by calculating your energy usage. Type “climate footprint†or “carbon footprint†into Google and try a couple of calculators that track use in different ways. One is Earthlab’s (earthlab.com/createprofile/reg.aspx); the University of California at Berkeley also offers one at bie.berkeley.edu/files/ConsumerFootprintCalc.swf.

For a calculation, you’ll need information about your home energy use and your travel by car and public transit. Some calculators ask whether you’re vegetarian, how much you recycle and compost, and how much you spend buying goods and dining out. The equation can get involved. Record your information sources, and then revisit the calculator periodically with new numbers to see how you’re doing.

The final element involves a carbon offset, “an emission reduction credit from another organization’s project that results in less carbon dioxide or other greenhouse gases in the atmosphere than would otherwise occur,†says the David Suzuki Foundation, which promotes “ways for society to live in balance with the natural world.†You can purchase credits from a renewable energy company, for instance, to offset the amount of carbon emissions you can’t eliminate through other measures.

Will your efforts make a difference? “Kick the Habit†says that, for individuals, “less than 50 percent are direct emissions (such as driving a car or using a heater).†About 20 percent are caused by the creation, use and disposal of products we use; 25 percent comes from powering workplaces; and 10 percent from maintaining public infrastructure. You can drive your car less and turn down the heat, but consider ways you can affect business and government policies that could tap into that other 50-plus percent.

“We are all part of the solution,†wrote U.N. Secretary-General Ban Ki-moon in the foreword to “Kick the Habit.†“Whether you are an individual, a business, an organization or a government, there are many steps you can take to reduce your climate footprint. It is a message we must all take to heart.â€

CONTACT: “Kick the Habit,†unep.org/publications/ebooks/kick-the-habit.

SEND YOUR ENVIRONMENTAL QUESTIONS TO: EarthTalk, PO Box 5098, Westport, CT 06881; earthtalk@emagazine.com. Read past columns at emagazine.com/earthtalk/archives.php. EarthTalk is now a book! Details and order information at emagazine.com/earthtalkbook.

Latest News

Voices from our Salisbury community about the housing we need for a healthy, economically vibrant future

Renee Wilcox

If you’ve ever wandered through Paley’s Farm Market, you probably know Renee Wilcox. For thirty years, she has been greeting you with unmistakable warmth—always ready with a smile. Renee grew up in Millerton, but it was in Salisbury that her family found something they’d never had before: a true sense of home. In 2003, she and her husband Bill were living in Millerton, but Bill—a volunteer with the Lakeville Hose Company—was already part of Salisbury life. When the Salisbury Housing Trust finished eight new homes on East Main Street (Dunham Drive), Renee and Bill were the first to sign on.

The story of those houses is really a story about the best parts of our community. Richard Dunham and his wife, Inge, along with the Housing Trust board, poured years of energy and hope into the project. Renee can’t help but light up when she talks about the people who helped her family settle in. Digby Brown came by to install appliances and bathroom cabinets; Barbara Niles spent hours painting; Carl Williams assembled bunk beds for the kids. Rick Cantele, at Salisbury Bank, helped them with their finances so they could qualify for a mortgage, while neighbors arrived at their door with fruit baskets and welcoming words.

Keep ReadingShow less
Trade Secrets: a glamorous garden event with a deeper mission

Heavy stone garden ornaments, a specialty of Judy Milne Antiques from Kingston, at Trade Secrets 2025.

Christine Bates

Tucked away on Porter Street in downtown Lakeville, Project SAGE is an unassuming building from a street view. But cross the threshold a week before Trade Secrets — one of the region’s biggest gardening events, long associated with Martha Stewart and glamorous plants of all varieties — and you’ll find a bustling world of employees and volunteers getting ready for the organization’s most important event of the year.

“It’s not usually like this,’ laughed Project SAGE director Kristen van Ginhoven. “But with Trade Secrets just around the corner, it’s definitely like this.”

Keep ReadingShow less
Two artists, two Hartford stages, one shared life

Caroline Kinsolving and Gary Capozzielo at home in Salisbury with their dogs, Petruchio and Beatrice

Provided
"He played his violin, I worked on my lines, we walked the dog, and suddenly we were circling each other perfectly."
Caroline Kinsolving

Actor Caroline Kinsolving and violinist Gary Capozziello enjoy their quiet life with their two dogs in Salisbury, yet are often pulled apart to perform on distant stages in far-flung cities. Currently, the planets have aligned, and both are working in Hartford, across Bushnell Park from one another. Bridgewater native Kinsolving is starring in “Circus Fire,” the current production of TheaterWorks Hartford, while Capozziello is a violinist and assistant concertmaster of the Hartford Symphony Orchestra. While Kinsolving hates being away from home, she feels the distance nourishes their relationship.

“We are guardians of each other’s confidence and self-esteem,” she said.

Keep ReadingShow less
google preferred source

Want more of our stories on Google? Click here to make us a Preferred Source.

Local filmmaker turns spotlight back on Hollywood’s Mermaid

Esther Williams in “Million Dollar Mermaid” (1952).

Provided

For decades, Esther Williams was one of Hollywood’s brightest stars, but the swimming sensation of the silver screen has largely faded from public memory — a disappearance that intrigued Millerton filmmaker Brian Gersten and inspired him to revisit her legacy.

As a millennial, Gersten grew up largely unaware of Williams’ influential career. His teen years in Chicago were spent with friends who obsessed over movies, spending hours at their local independent video store,and watching anything that caught their eye. Somehow, though, they never ventured into the glossy world of synchronized-swimming musicals of the 1940s and ‘50s.

Keep ReadingShow less
Summer exhibition opens at Wassaic Project

Nate King, “When I Was Younger And Now That I’m Older,” 2026, Digital projection, digital animation, photography.

photo courtesy Nate King

The Wassaic Project, the 8,000-square-foot, seven-story former grain elevator transformed into a vibrant arts space, opens its 2026 Summer Exhibition, “Because, now is the time of monsters,” on Saturday, May 16, from 3-6 p.m. at Maxon Mills, launching a season-long presentation featuring 39 artists working across installation, performance, video and sculpture.

The opening celebration will include an afternoon of exhibitions and live programming throughout the historic mill building and its surrounding spaces. Gallery and Art Nest hours run from 12-6 p.m., with special presentations scheduled throughout the day.

Keep ReadingShow less
Hotchkiss to host inaugural International Piano Competition
Murong Yang ’08, a founding supporter of the Hotchkiss International Music Competition, helped establish the program through the Yang and Hamabata families to support young musicians and artistic excellence.
Provided

The Hotchkiss School will launch a major new addition to its arts programming with the inaugural Hotchkiss International Piano Competition, a three-day event taking place May 15–17 in Katherine M. Elfers Hall.

The competition will bring together young pianists ages 10 to 18 from around the world, with participants representing the United States, Thailand, Korea, China, Canada, and Azerbaijan. Performers will compete across multiple age divisions, culminating in final rounds that will be open to the public, offering audiences the opportunity to hear a wide range of emerging international talent in performance.

Keep ReadingShow less
google preferred source

Want more of our stories on Google? Click here to make us a Preferred Source.

google preferred source

Want more of our stories on Google? Click here to make us a Preferred Source.