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From New World Encyclopedia

New World Encyclopedia integrates facts with values. Written by certified experts.

Featured Article: Water

Water covers about 71 percent of the Earth's surface
Water is a common chemical substance that is essential for all known forms of life. In typical usage, the term water refers to its liquid state, but the substance also has a solid state, ice, and a gaseous state, water vapor. About 71 percent of the Earth's surface is covered by water, mostly in oceans and other large water bodies. Water moves continually through a cycle of evaporation or transpiration, precipitation, and runoff, usually reaching the sea. Winds carry water vapor over land at the same rate as runoff into the sea. Some water is trapped for varying periods in ice caps, glaciers, aquifers, or in lakes, sometimes providing freshwater for life on land.

Popular Article: Outdoor education

A group of Outward Bound participants
Outdoor education refers to organized learning that takes place in the outdoors. Drawing upon the philosophy and theory of experiential education and environmental education, outdoor educational programs often involve residential or journey-based experiences in which students participate in a variety of adventurous challenges such as hiking, climbing, canoeing, ropes courses, and group games. Outdoor education programs are intended to provide a variety of learning experiences. These include individual character-building through facing physical challenges; team building and trust in others; as well as direct experience of nature and learning skills to survive and enjoy the outdoors.

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