Upgrade to 90% cleaner busesThe iconic yellow school bus is a great way to get kids to school - those that can't walk or bike there for whatever reason - and is certainly better than having each parent drive to school in their own vehicle... Every day, 25 million kids take them just in the US. These buses last forever, which is a good thing in some ways, but it has an important downside: Old, obsolete, hyper-polluting diesel engines. The World Health Organization (WHO) has recently come out and said that it believes diesel exhaust causes lung cancer, and around the world air pollution is now the biggest environmental health risk with 7 million deaths per year.
Clearly it's best to avoid exposing kids, and everyone else, to the fumes and soot from these old school buses. That's why the Environmental Protection Agency (EPA) has created a rebate program that encourages old yellow bus operators to upgrade to a more modern mode, which can have an engine that is 90% cleaner when it comes to those nasty smog-forming emissions.
You can find the info required to apply here. Might be a good idea to tell your school about this if you suspect that their buses are older than 10 years...