In many remote areas of the world, there are no library buildings. In many countries, books are delivered in unusual ways.

From fleet-footed cheetahs to howling wolves, and from playful dolphins to earth-shaking elephants...

Discover how the ocean changes as it goes deeper, how deep sea animals survive in harsh environments...

Whether you're interested in weather, oceans, or even the prehistoric world, earth science covers it...

If you ran for president, you would have to do a lot of hard work. You would study the nation's...

This biography tells the story of Harriet Tubman, a slave who helped other slaves escape from the...

The author describes roles of canines long ago (such as the use of dog power to transport goods) and...

I Am Planet Earth describes its location in the solar system, its atmosphere, geographic features...

What are peanuts - are they peas or are they nuts? Do they grow above or below ground? Who invented...

Over and over again, Frida Kahlo turned the challenges of her life into art.