It's crazy to think people once believed the earth was flat. One step too far and you'd be sent tumbling into the depths of the abyss of who knows what or where. Thanks to the explorers who came ...

#1 New York Times Bestseller! Get thousands of facts at your fingertips with this essential resource: sports, pop culture, science and technology, U.S. history and government, world geography, ...

From the early civilizations of ancient Mesopotamia to our present-day globalized society, readers will learn how humans interacted―and still interact―with the environment around them, as well as the ...

Discover fascinating geography facts in just 60 seconds! From surprising landmarks to unique natural phenomena, this quick video packs in intriguing tidbits from around the world. Perfect for anyone ...

Ten years ago at a convention in Baltimore, Lydia Lewis, who teaches U.S. history to fifth graders at a private school in Washington, met what she described as a bright, college-educated young woman ...