1.   The technology for reducing diesel emissions is expensive.

2.   Although research has yet to prove a direct link between diesel emissions and asthma, studies suggest that diesel exhaust can help cause attacks.

3.   And a new study of diesel emissions could unravel EPA plans to lower sulfur content in fuel.

4.   And with new state and federal regulations on diesel emissions, the plant-based fuel is expected to become increasingly popular.

5.   Another Allen bill that would have cut diesel emissions died early in the legislative session.

6.   But advocates for riders and environmental groups contend that the health risks of diesel emissions outweigh the gains in efficiency.

7.   Cummiskey, now a state senator, is gloomy about the prospects of lawmakers getting serious about diesel emissions.

8.   Much of the current consensus about the cancer-causing effects of diesel emissions is based on animal studies.

9.   On other fronts, however, he said the Legislature should attack diesel emissions through incentives to private businesses, rather than legal restrictions.

10.   The best route to reducing diesel emissions is to get the older trucks with dirtier engines off the road, he said.