1.   The engine sputtered to life with a corrupting puff of diesel exhaust.

2.   Particles from diesel exhausts may also cause allergic reactions in their own right.

3.   THE Government could face repair bills from thousands of motorists whose car engines have been damaged in tests on toxic emissions from diesel exhausts.

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

5.   And an important component of that process is avoiding the introduction of unnecessary new concentrations of contaminants, and especially the fine particles contained in diesel exhausts.

6.   And Stanford University researchers concluded that diesel exhaust was the leading cause of global warming after carbon dioxide.

7.   Although diesel exhaust is included in the inventories, no estimate is made of the associated cancer risk.

8.   But as a card-carrying environmentalist, I still prefer my nature straight up, minus the diesel exhaust, not through a window from my king-size bed on wheels.

9.   California has taken it a step farther, labeling particles in diesel exhaust as toxic air contaminants.

10.   EPA has not settled on a carcinogenic potency estimate for diesel exhaust.