American Geographical Society, the oldest geographical society in the United States. Its objectives are to encourage research in geography and to spread geographical knowledge. It has sponsored research projects and was associated with many early Arctic explorations. Publications include two quarterlies, Geographical Reviewand American Geographical Society—Focus.The society was founded in 1851. Membership is about 1,300. Headquarters are in New York City.
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.
Sand dunes belch, moan and hum. They roll across the desert, seeking out new locales. You might even say they breed. It's no wonder people call these giant sand formations lifelike.