Describes the location, nature, development, measurement, and destructive effects of tornadoes, as well as how to stay out of danger from them.

Award-winning science writer Seymour Simon explores the Red Planet through fascinating facts and amazing full-color photographs. Readers will learn about the recent discovery of water, the Valles Marineris-the biggest valley on Mars-the ice caps, recent expeditions, and more. This updated edition includes: author's note stunning full-color photographs glossary index websites and additional reading sources Supports the Common Core Learning Standards,...

Text and photographs present the physical characteristics, habits, and natural environment of various species of wolves.

Presents wildfires as neither good nor bad but as part of the endless cycle of change in forests and grasslands.

Describes the various parts of the brain and the nervous system and how they function to enable us to think, feel, move, and remember.

Describes the heart, blood, and other parts of the body's circulatory system and explains how each component functions.

Introduces various mountain ranges, how they are formed and shaped, and how they affect vegetation and animals, including humans.

Text and photographs explore the physical characteristics, life forms, and fragility of the world's oceans.

Describes the characteristics of the planet Jupiter and its moons, as revealed by photographs sent back by unmanned spaceships.

Describes the various parenting techniques of different types of wild animals and provides a close look at the behavior and characteristics of their offspring.