Anne Welsbacher

From brilliantly colored birds and wild elephants to towering trees and exotic flowers, rain forests are home to more than half of Earth's plants and animals. People living in rain forests depend on this vast array of life, and Earth itself relies on the world's rain forests to keep our climate and atmosphere in balance. But rain forests around the world are under threat. Once rain forests covered nearly 14 percent of Earth, but now they have shrunk...

A biography of the the man who became the twenty-sixth president of the United States when President McKinley was shot in 1901 and who helped establish the national park system.

A biography of the president who held the country together during the bloodiest war ever fought in the United States.

A simple introduction to our solar system and its many components, including the sun, planets, satellites, asteroids, and comets.

Examines the childhood, political career, and other activities of the seventh president of the United States, the first president to come from a poor family.

Uses everyday examples to describe pulleys as simple machines that make lifting, pulling, and moving easier.

Discusses our planet's atmosphere, land forms, seasons, weather, life forms, and constantly changing nature.

Describes social, feeding, and hunting behaviors, as well as the physical characteristics and life cycle of leopards.