Core Library

Throughout US history, many immigrant groups have faced discrimination. This has sometimes led to laws that restrict immigration. The 1924 Immigrat...

Even if all greenhouse gas emissions stopped today, Earth would continue to feel the effects of climate change for a long time. This is why it is i...

Media outlets rely on advertising for financial support, but in many cases it's becoming more difficult to determine where the news ends and advert...

Are you ready to explore? This continent has unique people, plants, animals, geographical features, and cultures. Take a fascinating tour of Africa...

Experience African-American history through the eyes of the people who lived it, from the horrors of slavery through the civil rights movement to t...

On June 1, 2009, a plane was making its way from Brazil to France when it disappeared over the Atlantic Ocean. An investigation revealed the engine...

From the beautiful beaches along the Gulf Coast to the booming cities of Huntsville and Birmingham, there's a lot to see and do in Alabama. This st...

From hiking on the Matanuska Glacier to cheering on Iditarod dogsled racers, there's a lot to see and do in Alaska. This state lies in the West. Al...

Have you ever wondered what it's like to be a cold-blooded, creepy-crawly alligator? Learn all about this incredible reptile in this upper-elementa...

The fossil fuels that power today's world are a limited resource. Luckily, scientists and engineers are developing many alternative energy sources ...

Have you ever wondered what it's like to be cold-blooded and creepy-crawly? The animal kingdom is full of incredible reptiles. Get to know some of ...

Scientists believe American alligators have been around for nearly 150 million years, but they came close to going extinct. American Alligator expl...

American bison are an icon of the American West, but they nearly disappeared forever. American Bison reveals the importance of America's national m...

Being an informed citizen is one of the hallmarks of a strong democracy. American Citizenship examines many aspects of what it means to be an Ameri...

The American flag, the Statue of Liberty, and US popular culture are all world-famous symbols of the United States. In The American Identity, reade...

The war for America's independence from Great Britain brought about not only political change, but also technological change. American Revolution T...

Animals come in all shapes and sizes. There are many incredible ways to encounter animals, from hiking at parks to visiting a zoo. Animal Encounter...

Are you ready to explore? This continent has unique people, plants, animals, geographical features, and cultures. Take a fascinating tour of Antarc...

Ancient humans have left their marks of civilization around the world. There are many incredible ruins to see, from massive cliffside dwellings to ...

Aretha Franklin was a legendary singer and activist. Her music helped shape the civil rights movement and inspired many people. Aretha Franklin: Le...

From hiking the Grand Canyon to learning about history in ghost towns, there's a lot to see and do in Arizona. This state lies in the Southwest. Ar...

From the Little Rock Central National Historic Site to the Blanchard Springs Caverns, there's a lot to see and do in Arkansas. This state lies in t...

Are you ready to explore? This continent has unique people, plants, animals, geographical features, and cultures. Take a fascinating tour of Asia t...

In August 1945, the US government dropped two atomic bombs on Japan to end World War II. The bombings forced Japan to surrender, but they left a co...