This book has a story about the Energy Eagle . The Energy Eagle was flying over Peoria, Illinois. He was worried about the animals and the people getting sick because the air in Peoria was not clean. The dirty air came from the fuel used by the cars and trucks in the city. The United States Post Office and the United States Department of Energy were also worried about this dirty air.
Air pollution is a problem in a lot of big cities.
Maybe your city's air is dirty too. That Help to Clean up the Air. The Post Office in Peoria Decided to Use One of These New Fuels to Help Their City. They Bought Trucks That Run on a New Fuel Called Natural Gas. Now Has 113 Mail Delivery Trucks That Use this New, Clean Fuel.