U.S. push for diesel poses risk to public health, scientists say

Diesel fuel is now at the center of a delicate balancing act between smog production and global warming. Some lawmakers and car manufacturers advocate widespread diesel use in passenger vehicles as a strategy for reducing the production of so-called ''greenhouse gases'' thought to cause global warming. But according to a new study, replacing gasoline vehicles in the United States with diesel vehicles - equipped even with the most modern pollution controls - may increase smog production over most of the country.

''If provisions in last year's United States energy bill pass this year, many diesel vehicles will qualify for the same tax credits as hybrid and hydrogen fuel cell vehicles,'' said Mark Jacobson, associate professor of civil and environmental engineering and lead author of the study published January 30 in the journal Geophysical Research Letters. He added, ''It is a surprise to me that this proposal was made before its possible effect on public health was evaluated.''

The main component of smog is ozone. In the upper atmosphere it absorbs intense cancer-causing ultraviolet radiation from the sun and prevents it from reaching Earth. In the lower atmosphere where we breathe, however, ozone is a respiratory irritant associated with decreases in lung function and increases in hospital visits for respiratory causes. Children, the elderly and individuals with preexisting respiratory disease have increased sensitivity to ozone exposure.

Ozone is formed in the lower atmosphere through sunlight-initiated chemical reactions between nitrogen oxides and hydrocarbons - compounds found in vehicle exhaust. The U.S. Environmental Protection Agency has designated ozone and nitrogen dioxide, along with four other air pollutants, as ''criteria pollutants'' for setting concentration standards for the protection of public health and the environment.

Compared to gasoline-fueled vehicles, diesel-fueled vehicles emit more nitrogen oxides and

Contact: Dawn Levy
Stanford University

Page: 1 2 3

Related medicine news :

1. Swallowing multiple magnets poses danger to children
2. Bushmeat poses threat of simian retrovirus transmission to humans
3. Blood transfusion poses CJD risk
4. Lack of sun poses danger in our twilight years
5. Vaccine shortage study exposes nations patchwork system
6. New statement proposes ways to stop deadly drug errors among heart, stroke patients
7. Study exposes dangers of snuff for smokers wanting to quit
8. Health-care expert proposes overhaul of long-term care financing
9. Lack of trained staff and technical support exposes patients to increased risk of cancer progression
10. European survey exposes poor patient awareness of new breast cancer treatments
11. Advertising by academic medical centers may risk eroding public trust, says study

Post Your Comments:

(Date:12/9/2019)... ... December 09, 2019 , ... WEDI , the nation’s leading nonprofit authority ... and a trusted advisor to the U.S. Department of Health and Human Services (HHS), ... election of Officers* as well as the re-election of ten previous board members to ...
(Date:12/9/2019)... ... December 09, 2019 , ... OCLI, a Spectrum Vision Partners (SVP) managed ... LASIK, Laser Cataract and Ophthalmology practice with experience spanning decades. As part of OCLI, ... their current practice location at 46 Eagle Rock Ave, East Hanover, NJ 07936. ...
(Date:12/8/2019)... ... 07, 2019 , ... Intelligent.com, a trusted resource for online ... of Science in Nursing (MSN) Degree Programs for 2020. The comprehensive research guide ... nation. Each program is evaluated based on curriculum quality, graduation rate, reputation, and ...
(Date:12/6/2019)... ... December 06, 2019 , ... C&A Industries ... in employee learning. The Omaha-based company has been named by Training magazine to ... employer-sponsored training and development programs worldwide. Rankings of the 125 leading companies will ...
(Date:12/6/2019)... , ... December 06, 2019 , ... ... used frequently, six students in Salt Lake Community College’s (SLCC) Emergency ... Mark Rodgers and Chelise Schaefer—were awarded the AT&T Public Safety Hero Scholarship to ...
Breaking Medicine News(10 mins):
(Date:12/8/2019)... ... December 08, 2019 , ... ... has announced the Top 50 Best Master's in Healthcare Administration Degree Programs for ... colleges and universities in the nation. Each program is evaluated based on curriculum ...
(Date:12/6/2019)... ... December 06, 2019 , ... Kindred Nutrition and ... services. While Kindred Nutrition and Wellness will continue to focus on Specialized ... to offer Individual and Family Therapy and Yoga. , Kindred Nutrition and Wellness ...
(Date:12/6/2019)... , ... December 06, 2019 , ... ... agreement with Forbidden Fruit Garden Supply LLC (a division of Horticultural Holdings LLC) ... clientele of professional growers. , FFGS is a team of disciplined and ...
Breaking Medicine Technology:
Cached News: