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Lead Stories: Sunday, November 23, 2008

Note on the News: Beijing’s Smog Still a Big Concern

Posted December 29th, 2007 at 1:08 PM by David Monti

Section: News & Results, Olympics

Today’s NEW YORK TIMES has a front page story on the thick smog which blankets the skies of Beijing and efforts to clean it up prior to next year’s Olympic Games.

You can read the story here:
http://www.nytimes.com/

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Q&A: Should I exercise outside on days when air pollution is heavy?

Posted September 7th, 2007 at 7:50 AM by Hariz Siddiqui

Section: Health & Fitness, Exercise

It’s healthful to exercise and harmful to breathe polluted air, so how can you decide whether you are doing more harm than good?

The worst time for pollution is when clouds cover the sky and automobiles fill the roads. Automobile exhaust fumes are the principal source of air pollution in most cities, and overlying clouds increase pollution. Usually the sun’s rays heat the ground to warm air closest to the ground. Hot air rises, taking large amounts of pollutants skyward. On air inversion days, the clouds prevent the sun’s rays from getting through to the ground, so the air near the ground is not heated, remains colder and doesn’t rise, causing the air with its pollutants to remain close to the ground.

Air pollutants such as carbon monoxide, ozone, carbon dioxide, and sulfur dioxide can damage your lungs. When you exercise . . .
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