2The equator is Earth's longest line of latitude, and it passes over numerous countries and many miles of ocean. It's always hot near the equator, and readers learn why inside this map-packed volume. Other topics include Earth's axis, rotation, and yearly trip around the sun and how these concepts affect the climate near the equator and around the world. The manageable text is paired with diagrams and colorful photographs, and the book ends with information about locations on the equator.