Facts on School Bus Diesel
Sierra Club School Bus Diesel Fact Sheet (pdf, 99k)
Enivornmental Protection Agency:
Diesel Exhaust
Voluntary Diesel Retrofit Program
Environment and Human Health, Inc. & Yale University:
Children's Exposures to Diesel Exhaust on School Buses
Natural Resources and Defense Council:
No Breathing in the Aisles
Exhausted by Diesel (pdf, 380k)
Union of Concerned Scientist:
Going to School May Be Hazardous to Your Health: Dirty Diesel School Buses
American Lung Association:
New Report Makes Case for Protecting Public Health from Diesel