Oftentimes, you can hear it—and smell it—before you see it: The steady sputtering of a bright yellow bus rolling around the corner to retrieve kids during the school year.  Each year, school buses around the U.S. carry students more than 4 billion cumulative miles. However, the majority of them are powered by diesel-fueled engines that … Continue reading A Federal Program Is Expanding Electric School Bus Fleets, But There Are Still Some Bumps in the Road