Encyclopedia of Earth: Geography

Geography is the study of natural and human constructed phenomena from a spatial perspective. Geography has two main sub disciplines:

Human geography includes such subjects as demography, human settlements, transportation, recreation and tourism, resources, religion, social traditions, human migration, agriculture, urban systems, and economic activities
Physical geography is concerned with the study of the Earth’s atmosphere, biosphere, hydrosphere, and lithosphere from theoretical and applied viewpoints.

Sometimes the disciplines of human and physical geography combine knowledge to create a more holistic synthesis.

Desert biomes cover about one fifth of the Earth's surface and are defined to occur where rainfall is less tha...

Overview The Sonoran Desert as currently defined covers approximately 200,000 square miles (520,000 sq. km) -...

The Magellanic subpolar forests is an ecoregion dominated by trees of the genus Nothofagus; this geographic zo...

The Douglas-fir (scientific name: Pseudotsuga) is a genus of tree that includes ar least five species found in...

Introduction Albedo is the fraction of Suns radiation reflected from a surface. The term has its origins fro...

Introduction This ecoregion lies almost wholly within Alberta but hugs the Alberta-British Columbia bor...

California, situated on the Pacific coast of the USA, is the third largest state of the United States in land ...

The nations national forests can provide public health benefit. But how exactly do our national ...

Climate changing our nations landscapes NOAA, American Public Gardens Association unveil partnership to enha...

Agriculture Gallery II Humans began to cultivate food crops about 10,000 years ago. Prior to that time, hun...

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