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...

Describes the physical characteristics, hunting behavior, habitat, and endangered status of crocodiles.

A simple biography of the nation's first president, who came to be known as the "Father of Our Country."

Uses everyday examples to describe levers as simple machines used to lift, push, or move a load.

Describes the physical characteristics, social, feeding, and hunting behavior, and life cycle of this swift African cat.

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

Presents a brief discussion of the properties of galaxies, including the Milky Way and others.

Uses everyday examples to show how screws are simple machines that make joining things together, moving, and lifting easier.