How many places do people go in a day? People are always on the go between school, work, shopping, and activities. But how we go can be just as important as where we go. Learn about different ways people move from one place to another, how transportation affects our air, land, and water — and how you can get there green now to make a difference for Earth. Book features: Table of Contents; Glossary; For More Information including books and web sites; Index; photos and captions; charts and graphs; source notes.