1.   The Potomac was clean again, a haven for windsurfers, and certain airborne pollutants had fallen sharply.

2.   Many people are allergic to airborne pollutants such as pollen.

3.   Airborne pollutants and accumulated toxic substances mean that when beluga whales die and wash ashore, their poisonous carcasses must be disposed of in hazardous waste sites.

4.   Airborne pollutants might play a role.

5.   By studying the wind and temperature patterns of the lower atmosphere, meteorologists can predict the movement and concentration of airborne pollutants.

6.   Exposure to airborne pollutants can be a serious hazard, health experts said.

7.   However, officials have noted that sickness from airborne pollutants is not currently a reportable category for the state health department.

8.   Respirators are simply filtration devices that keep airborne pollutants from entering your lungs as you breath.

9.   The cleanliness of the race course is a concern for some runners, since the enclosed space sees its share of airborne pollutants.

10.   The EPA announces a crackdown on smog and other airborne pollutants.