It all began with a class field trip when eccentric Ms. Frizzle shrinks a bus full of students and sends them traveling through the city's waterworks system. Since then, there was no place too small (germs!), too big (the solar system!), or too hot (inside a volcano!) for Ms. Frizzle's class to go on incredible science adventures. The Magic School Bus series explores such STEM topics as magnetism, electrical storms, the human body, the ocean floor, and even the time of the dinosaurs!