LONDON， Aug. 30 (Xinhua) -- Cars， buses and freight trucks are the principal cause of air pollution in over 95 percent of legally-designated air quality management areas in Britain， a research team from Bristol reported Tuesday.
Current estimates show that over 50，000 deaths a year can be attributed to an air pollution epidemic in Britain， the report revealed ahead of a debate on Wednesday at the Royal Geographical Society(with the Institute of British Geographers) annual conference.
Dr. Tim Chatterton and Prof. Graham Parkhurst from the University of the West of England in Bristol say transport planning in Britain is not sufficiently taking into account the environmental impacts of transport choices.
The two academics looked at policy and practice activities since a parliamentary environment act in 1995 committed Britain to improving air quality to internationally accepted standards.
They said measurements in the real environment show that little improvement has been achieved in the past two decades.
Chatterton and Parkhurst have carried out a review to identify the underlying reasons why air pollution concentrations from road transport in Britain have shown little to-no reduction over the last 21 years.
Their study claims that transport planners in Britain are not taking the environmental impacts of transport choices sufficiently into account.
They say road traffic accidents continue to remain the primary concern of transport planners while， "at best， air pollution has been designated a shared priority between the Department for Environment， Food and Rural Affairs and the Department for Transport."
Parkhurst said: "Air pollution is perhaps the grossest manifestation of a general failure of UK transport planning to take the environmental impacts of transport choices sufficiently into account."
"Insufficient relevant priority has been given within the sector responsible for most relevant emissions -- transport policy and planning -- which has instead prioritized safety and economic growth，" he added.
The academics say their study identifies a strategic policy tone which continues to signal and provide for the private car as central to national transport policy.
Added to this， they say， is limited government regulation and financial support for alternative modes of transport， as well as more low emissions zones in towns and cities.
Their report says that a failure to recognize that existing polluting vehicles are being replaced only slowly， the only sure way to bring about changes in pollution levels is to reduce vehicle use.
"There is a corresponding lack of emphasis on 'push' behavior change policies， to encourage walking and cycling in particular. Instead， policies for behavior change mostly rely on voluntary measures， which are as a result not very effective，" the two academics say in their report.
Households in poorer areas of Britain's towns and cities tend to be exposed to much higher levels of air pollution， even though they contribute much less to the traffic pollution principally through driving less.
Parkhurst and Chatterton will tell the conference that their findings confirm the need for air quality to be promoted as a public health priority issue in Britain.
"Air pollution-related morbidity and mortality are at epidemic levels and， although less obvious， are more significant than road transport collisions as a cause of death and injury，" they said.
CHICAGO Nuggets Michael Porter Jersey , Aug. 19 (Xinhua) -- Another black teenager was killed in the United States on Wednesday, 10 days after the first anniversary of death of Michael Brown, which caused massive protests in the country.
The police officers in St. Louis Nuggets Malik Beasley Jersey , which hit the headlines for its suburb Ferguson where Brown was killed, said the young man they fatally shot had pointed a gun at them.
They later identified the victim as Mansur Ball-Bey, aged 18.
However Nuggets Jamal Murray Jersey , later searches found no trace of any weapon at the crime-ridden area stormed by the police.
St. Louis police chief Sam Dotson said the gun the "suspect" pointed at them was "stolen", adding that cocaine was discovered at the scene.
"Detectives were looking for guns, looking for violent felons Nuggets Isaiah Thomas Jersey , looking for people that have been committing the crimes in the neighborhood," he said.
The St. Louis area in Missouri had just been flooded by protesters from across the United States marking the first anniversary of the Aug. 9 killing of unarmed black teenager Michael Brown by a white police officer.
The fresh shooting falls exactly upon the anniversary of not as famous police shooting of another black man in St. Louis, Kajieme Powell.
This has been the second killing of African-Americans by U.S. police in a single month. In the latest of such cases Nuggets Gary Harris Jersey , Christian Taylor, a 19-year-old black college football player, was fatally shot by an officer during a burglary call on Aug. 7 in the northern Texas city of Arlington.
Only a month ago Nuggets Emmanuel Mudiay Jersey , the tragic death of a black woman in a U.S. prison caught media attention in and out of the country.
Sandra Bland, 28, was stopped by a white Texas trooper for failing to signal a lane change. On a charge of assaulting a public servant Nuggets Dikembe Mutombo Jersey , Bland was put into a Texas jail, where she was found hanging with a plastic trash bag around her neck on July 13.
The high frequency of African-American deaths at the hands of policemen has questioned the human rights conditions in the United States.
The country has violated the economic and legal rights of its citizens to an alarming degree, the CATO Institute said in a latest report.
According to the Washington-based think tank's recently published Human Rights Index Nuggets Devin Harris Jersey , the United States' ranking fell from the 17th place in 2008 to the 20th in 2012, declining in indicators of rule of law and economic freedom, among others.
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