1.  Boeing denied the claims and contended it acted in a responsible manner by monitoring the chemical use and maintaining safe levels.

2.  Boeing denies the claims and contends it acted in a responsible manner by monitoring the chemical use and maintaining safe levels.

3.  But abnormal frogs have been found in places with very different histories of chemical use, from farmland to protected state forests.

4.  Choosing the right plants, finding problems early and treating when the pest is most vulnerable can reduce both chemical use and damage.

5.  Generally, though, its followers cut chemical use by rotating crops to control weeds and add nutrients to the soil.

6.  Glickman also should campaign to reduce agricultural chemical use because traces end up in food, Jaeger said.

7.  Herbicide sprayed along roadsides may be threatening public health and the environment, according to an environmental group that tracks chemical use in California.

8.  Never before has the problem of chemical use in our waters been more serious.

9.  Other systems correlate harvests, yard by yard, with the earlier applications, so farmers learn how to optimize chemical use.

10.  Over the years, they forced Congress to pass new laws and industry to reduce chemical use, and defeated unwanted projects across the country.