11.   Several health studies have drawn a new focus on diesel exhaust, including the dangers of micro particles that contribute to asthma and are suspected carcinogens.

12.   Ten years ago, scientists thought diesel exhaust and other pollutants might be causing the asthma epidemic.

13.   Ten years ago, scientists would have agreed with Ms. Garcia that diesel exhaust and other pollutants might be causing the asthma epidemic.

14.   The lawsuits contend the supermarket chains have failed to warn people living around distribution centers and workers of unsafe levels of cancer-causing diesel exhaust.

15.   While the United States has had a relative hands-off attitude about diesel exhaust, Europe requires the kind of cleaner-burning diesel that the EPA rule would.

16.   You find a lot of these hydrocarbon compounds in diesel exhaust and all kinds of combustion products.

17.   Cancerous tumors have been found in rats after exposure to diesel exhausts.

18.   In May, the Bush administration let stand Clinton-era regulations aimed at protecting underground coal miners from particles in diesel exhaust.

19.   Other cancer deaths resulted mainly from chemicals, radiation, dust, passive smoking and diesel exhaust, it said.