1.   All new cars today must have expensive catalytic converters to reduce emissions.

2.   All the measures that I catalogued earlier will help to reduce vehicle emissions - the principal cause of bad air.

3.   By the end of the Decade we could reduce toxic emissions by half.

4.   Chester was still trying to persuade the Committee that there was no urgency about reducing sulphur emissions.

5.   International controls are needed to reduce emissions of greenhouse gases.

6.   It must, therefore, provide the leadership in reducing these emissions.

7.   Other companies have studied ways to offset or reduce emissions of carbon dioxide.

8.   Other cost-effective ways of reducing emissions included combined heat and power for housing, factories and hospitals, and lighting efficiency.