Did you know that monarch butterflies start their lives as eggs? They go through four separate st...

The strongest hurricanes can have winds of more than 157 miles (252 kilometers) per hour. The wid...

Did you know that some frog species can lay up to 20,000 eggs in a single season? Most amphibians...

Did you know that reptiles are some of the longest-living animals on the planet? Large tortoises ...

Earthquakes are one of the deadliest natural disasters in the world. Although earthquakes cannot ...

Introduces hurricanes, describing how they form, where they occur, what causes them to increase i...

Garbage Collector

'Did you know humpback whales have lungs and need to reach the ocean surface in order to breathe?...

Did you know that animals with feathers use different camouflage tactics than animals with fur? A...

The American Civil War was the sternest test yet for the young nation. The Civil War: 1856-1865 r...

Did you know that reptiles are some of the longest-living animals on the planet? Large tortoises ...

Explores how symbiosis has helped animals adapt to survive a variety of conditions and climates.

Earthquakes are one of the deadliest natural disasters in the world. Although earthquakes cannot ...

Introduces hurricanes, describing how they form, where they occur, what causes them to increase i...

Did you know that some frog species can lay up to 20,000 eggs in a single season? Most amphibians...

During the expansion west and amid the increasing population of the United States, the nation und...

'Did you know humpback whales have lungs and need to reach the ocean surface in order to breathe?...

Garbage Collector

Accompanying interactive ebook available.

As a tadpole changes into a frog, its tail is absorbed into its body. A caterpillar can eat up to...

Mutualism is a relationship between two animals where both benefit. Aphids create food for ants, ...

The most common type of camouflage is background matching. The coat of an arctic fox changes over...

Amphibians are known for their soft, moist skin. Unlike many other animals, they are able to brea...

Reptiles are found on every continent except Antarctica. As cold-blooded animals, they cannot liv...