NASA
Nasa Earth Observatory: Modeling Earth's Land Biosphere
Read this article to learn how scientists are using instruments to try and monitor our land biosphere. Scientists have learned two different types of models to help track data from our land.
US Department of Agriculture
China's Food and Agriculture: Issues for the 21st Cent.
A series of reports published but the United States Department of Agriculture in April of 2002 (in PDF format) from the USDA that covers "China's food consumption, marketing, international trade, agricultural policy, transportation...
American Geosciences Institute
American Geosciences Institute: What Is Glacial Erosion?
An overview of the formation and existence of glaciers, and the effects of their movement.
Weather Wiz Kids
Weather Wiz Kids: Wind
Wind is air in motion. It is produced by the uneven heating of the earth's surface by the sun. Since the earth's surface is made of various land and water formations, it absorbs the sun's radiation unevenly. Two factors are necessary to...
Energy for Sustainable Development
Kinds and Energy: Wind Energy
Wind is air in motion. It is produced by the uneven heating of the earth's surface by the sun. Since the earth's surface is made of various land and water formations, it absorbs the sun's radiation unevenly. When the sun is shining...