1. Education

Geography of the Earth

Learn about our planet from its core to its atmosphere and everything in between, including the rivers and streams to plate tectonics.

Magnetic Declination
Why does true north vary from magnetic north? Read this article to learn information about the Earth’s magnetic declination. Learn information about Earth’s magnetic field, how magnetic declination differs around the world, how to calculate magnetic declination and how to use a compass with magnetic declination.

What is Eurasia?
How can we consider Eurasia to be two separate continents, when there is no appreciable boundary between the two regions?

Nautical Miles
Learn about the definition and development of nautical miles. A nautical mile is a unit of measurement used on water by sailors and/or navigators in shipping and aviation. An overview of nautical miles from the expert About.com Geography GuideSite.

Greenland and Australia - Continents or Not?
Is Greenland a continent? Why is Australia considered a continent? What is Oceania? Get answers to these questions and more from the About.com expert Geography site.

Rivers Flowing North
Learn all about rivers that flow northward around the world, from your About.com Guide to Geography.

North Pole - Overview of the North Pole
Everything you ever wanted to know about the geographic north pole and the magnetic north pole. Discover how rapidly the magnetic north pole is moving and where it's going.

Continents on Earth
The answer to the question - how many continents are on the earth? The answer from your About.com expert Guide to Geography.

100th Meridian
Learn about the 100th meridian, representing the boundary between the moist east and the arid west of the United States, from your About.com Guide to Geography.

Speed of the Earth
Discover the speed of the earth with respect to the revolution or orbit of sun and the rotation of the earth on its axis.

Basic Earth Facts
A collection of basic facts about the planet earth, from your About.com Guide to Geography.

Geography FAQ
Dozens of questions and answers about the earth; a vast collection of facts.

Highest Mountains
A list of the higest mountains in the world, from your About.com Guide to Geography.

The Fifth Ocean
The International Hydrographic Organization has created a new fifth ocean - the Southern Ocean - surrounding Antarctica.

Milankovitch Cycles
Astronomer Milutin Milankovitch developed the mathematical formulas upon which orbital variations are based. He hypothesized that when some parts of the cyclic variations are combined and occur at the same time, they are responsible for major changes to the earth's climate (even ice ages). Learn more about the Milankovitch Cycles in this article.

Six or Seven Continents?
Are Europe and Asia separate continents or are they one, Eurasia?

World Geography
The complete chapter on with hundred of excellent entries about world geography topics from the "The New Dictionary of Cultural Literacy." Includes countries, oceans, physical features, cities, and more. Each entry tells why that particular place or thing is important to know.

The Equator, Hemispheres, Tropic of Cancer, and Tropic of Capricorn
An overview of the three most important lines of latitude on Earth - the equator, Tropic of Cancer, and Tropic of Capricorn, from the About.com Geography GuideSite.

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