Association of American Geographers, a professional society in the field of geography. It promotes research and encourages the application of geographic findings to education, government, and business. It publishes The Professional Geographer, a quarterly journal, and the monthly AAG Newsletter. The association was founded in 1904. It has a membership of about 7,000. Headquarters are in Washington, D.C.
World, the earth with its inhabitants and their activities. Earth and world have somewhat the same meaning, but as used here earth refers to the planet while world refers to the earth as lived on and used by humankind.
You don't have to be a globetrotter to explore the far corners of the Earth -- you can test your knowledge of the world with our geography quiz.