China issues first-ever red alert on air pollution

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[h=4]China issues first-ever red alert on air pollution[/h]The air pollution in China, especially in big cities such as Beijing, has become dangerously high.

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Beijing's pollution levels have risen to severe levels, prompting China to issue its first ever "red alert" for smog in the city. USA TODAY


A woman wearing a face mask to protect herself from pollutants walks past office buildings shrouded with pollution haze in Beijing, Monday, Dec. 7, 2015. Beijing issued its first-ever red alert for smog on Monday, urging schools to close and invoking restrictions on factories and traffic that will keep half of the city's vehicles off the roads.(Photo: AP)


The<span style="color: Red;">*</span>air pollution<span style="color: Red;">*</span>levels in Beijing that prompted China to issue its first "red alert" for smog in the<span style="color: Red;">*</span>capital city pose serious health dangers to people who live there.
The heavy smog poses a danger to everyone, but especially people with heart disease<span style="color: Red;">*</span>or lung conditions<span style="color: Red;">*</span>such as asthma or emphysema, said<span style="color: Red;">*</span>David Lang chairman of the department of allergy and immunology<span style="color: Red;">*</span>at Cleveland Clinic, who visited China in October.
USA TODAY
The most polluted city is? Hint: Not Beijing




Air pollution can cause cancer, according to the World Health Organization. It also can trigger<span style="color: Red;">*</span>heart attacks in people with underlying heart disease,<span style="color: Red;">*</span>said John Groopman, a professor of environmental health sciences at the<span style="color: Red;">*</span>Johns Hopkins Bloomberg School of Public Health in Baltimore<span style="color: Red;">*</span>who has worked in China for 35 years.
Children are also at greater risk, because they spend more time playing outside and<span style="color: Red;">*</span>have smaller lungs, Lang said. Heavy pollution can permanently damage children's lungs, putting them at greater risk of lung disease as adults, said Janice Nolen of the American Lung Association. Officials in China urged Beijing schools to close to protect children from the unhealthy air.
In all, about 7 million people worldwide die every year due to air pollution<span style="color: Red;">*</span>—<span style="color: Red;">*</span>about 1 in 8 deaths, according to WHO.
Air quality levels are measured on a scale that begins at 0, with levels under 50 considered healthy, Lang said. Pollution levels in the United States<span style="color: Red;">*</span>rarely exceed 100, the level considered unhealthy.
As of Tuesday morning, the air quality rating in Beijing was 200, on the border between "unhealthy" and "very unhealthy," Lang said. On days when air pollution is this bad, people with asthma and similar conditions should avoid physical activity, and healthy people should reschedule outdoor plans, he said.
"There's no question that this is injurious to health," Lang said, noting that pollution irritates the lungs. "You start coughing after a while."
USA TODAY
The most polluted city is? Hint: Not Beijing




USA TODAY
Beijing readies for three days of smog under first-ever red alert




When Lang visited the Chinese city of Xian in October, the sky was dark gray, even in the middle of the afternoon. He and colleague, who has asthma, bought protective masks.
While these masks can block large particles of soot, they don't block the smallest particles of pollution, which can get deep into the lung, Groopman said.
This isn't the first time that a city's air has become dangerously dirty.
In 1952, London experienced a "killer fog," a mix of soot and and dense fog that killed thousands of London residents in four days. In 1966, an intense smog<span style="color: Red;">*</span>over Thanksgiving weekend was blamed for the deaths of 166 people in New York.
The United States<span style="color: Red;">*</span>hasn't seen air pollution levels like China's in decades, thanks largely to the Clean Air Act of<span style="color: Red;">*</span>1970, Groopman said.
Before the Clean Air Act, there were days in Los Angeles when the smog was so thick that "you couldn't even see that there were mountains and hills around," Groopman said.
Efforts to clean the air in the USA have produced dramatic changes, Groopman said.
"There are blue skies over Baltimore today," Groopman said. "Not that long ago, when the steel plant was working and there was a lot of heavy industry, the skies were orange."

Air over the Chinese city of Xian in October was filled with smog and made it difficult to see.<span style="color: Red;">*</span>(Photo: David Lang)

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