1.   Cleaner fuel has contributed to a reduction in air pollution.

2.   The Government has made moves to encourage owners of vehicles to adopt cleaner fuel, but action is slow.

3.   We need cleaner fuels for cars and other road vehicles.

4.   The law would encourage companies to switch from coal to cleaner fuels.

5.   ...industrial research into cleaner fuels.

6.   While this step awaits technical advances, cleaner fuels for cars and lorries, such as methanol, are urged for immediate use.

7.   It involves construction of a hydrocracker, a gasification plant, reflecting the shift from coal to gas as a cleaner fuel, and several smaller facilities.

8.   And Valero is also well positioned to take advantage of the trend toward cleaner fuels.

9.   Becker may be even happier in a few years, if scientists in Japan and the United States find ways to abandon gasoline for cleaner fuels.