Diesel trains are bigger polluters

Aug 14, 2006

U.S. scientists have discovered they've been severely underestimating the amount of pollutants emitted by diesel locomotive engines.

The government scientists have been using faulty estimates of the amount of fuel used by diesel trains, therefore understating the amount of nitrogen oxide and soot that's emitted by locomotives, The Washington Post reported Monday.

The Environmental Protection Agency is writing new emission standards for trains and ships to reduce nitrogen oxide and particulate pollution by up to 90 percent.

"More than 150 million Americans live in areas that violate public health standards for one or both of these pollutants, and a lot of them live near major rail lines," Frank O'Donnell of the advocacy group Clean Air Watch told The Post. "Millions will probably continue to breathe dirty air in the future unless we reduce public exposure to train pollution."

Although trucks emit more than three times as much soot and more than twice the amount of nitrogen oxide as trains, observers say that will change as stricter motor vehicle standards become effective, the newspaper said. By 2030, trains are expected to emit nearly twice as much soot as trucks unless new rules are issued.

Copyright 2006 by United Press International

Explore further: Predicting bioavailable cadmium levels in soils

add to favorites email to friend print save as pdf

Related Stories

Recommended for you

Predicting bioavailable cadmium levels in soils

11 hours ago

New Zealand's pastoral landscapes are some of the loveliest in the world, but they also contain a hidden threat. Many of the country's pasture soils have become enriched in cadmium. Grasses take up this toxic heavy metal, ...

Oil drilling possible 'trigger' for deadly Italy quakes

15 hours ago

Italy's Emilia-Romagna region on Tuesday suspended new drilling as it published a report that warned that hydrocarbon exploitation may have acted as a "trigger" in twin earthquakes that killed 26 people in ...

Snow is largely a no-show for Iditarod Trail Sled Dog Race

15 hours ago

On March 1, 65 mushers and their teams of dogs left Anchorage, Alaska, on a quest to win the Iditarod—a race covering 1,000 miles of mountain ranges, frozen rivers, dense forest, tundra and coastline. According ...

UN weather agency warns of 'El Nino' this year

16 hours ago

The UN weather agency Tuesday warned there was a good chance of an "El Nino" climate phenomenon in the Pacific Ocean this year, bringing droughts and heavy rainfall to the rest of the world.

Study shows less snowpack will harm ecosystem

17 hours ago

(Phys.org) —A new study by CAS Professor of Biology Pamela Templer shows that milder winters can have a negative impact both on trees and on the water quality of nearby aquatic ecosystems, far into the warm growing season.

User comments : 0

More news stories

UN weather agency warns of 'El Nino' this year

The UN weather agency Tuesday warned there was a good chance of an "El Nino" climate phenomenon in the Pacific Ocean this year, bringing droughts and heavy rainfall to the rest of the world.

Low Vitamin D may not be a culprit in menopause symptoms

A new study from the Women's Health Initiative (WHI) shows no significant connection between vitamin D levels and menopause symptoms. The study was published online today in Menopause, the journal of The North American Menopa ...

Astronomers: 'Tilt-a-worlds' could harbor life

A fluctuating tilt in a planet's orbit does not preclude the possibility of life, according to new research by astronomers at the University of Washington, Utah's Weber State University and NASA. In fact, ...