Health Experts See Benefits in Push to Cut Pollution – NYTimes.com.

NYT REPORTER DENISE GRADY: Carbon dioxide from coal burning, a main cause of global warming, does not cause heart or lung problems itself, but the soot, chemicals and particles that accompany it can make people sick. For instance, researchers in New York City, led by Dr. George D. Thurston of the New York University School of Medicine, found that on days with high levels of ozone and air pollution, hospital admissions for respiratory problems rose about 20 percent.