1.   Last October pollution reached record levels.

2.   Coal-burning Ohio just won an exemption from federal nitrogen oxide standards, allowing more pollution to reach Massachusetts.

3.   That means the TNRCC forecasts that ozone pollution will reach an average of a certain level within the eight hours.

4.   The researchers reason that by the time carbon dioxide pollution reaches Antarctica, such short-term variations have evened out.

5.   There are limits, of course, to what plants can do in severely damaged areas, especially those where the pollution reaches deeply into the soil.

6.   But pollution already has reached alarming levels in many parts of the country.

7.   Ecologists launched a publicity campaign against the mayor and government two weeks ago when air pollution reached peak ozone levels and no action was taken to regulate traffic circulation.

8.   Visibility in Kuala Lumpur and neighboring areas is already low because of the haze, but the pollution has not reached levels that endanger health.

9.   When the pollution over Sarawak reached a state considered unhealthy, the tourist board sent messages on the Internet advising travelers to postpone their holidays.

10.   Air pollution has reached alarming proportions in Tehran in recent years and seriously threatens the health of its residents.