Over 90% of the current U.S. school bus fleet is diesel-powered, which exposes children to toxic exhaust linked to asthma, cancer and other illnesses. Students with disabilities, those living in rural communities, low-income families and Black students are more likely to travel long distances on a school bus, making them more susceptible to the damaging effects of diesel exhaust. While electric school buses offer a cleaner, exhaust-free alternative, without the right planning, they can actually exacerbate inequities. Read more.