Discover 25 country facts that will completely change how you see the world. From Russia's 11 time zones to Australia's ...

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 ...

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 ...

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 ...