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water pollution

(Encyclopedia) water pollution, contamination of water resources by harmful wastes; see also sewerage, water supply, pollution, and environmentalism. The United States has enacted extensive federal…

America's Troubled Waters

Source: U.S. PIRG, Troubled Waters: An Analysis of Clean Water Act Compliance, 2006. Since 1972, the Clean Water Act has made significant strides in…

pollution

(Encyclopedia) pollution, contamination of the environment as a result of human activities. The term pollution refers primarily to the fouling of air, water, and land by wastes (see air pollution;…

Perils of Pollution

Global Warming Many scientists believe human-caused pollution is making the world a warmer place, a process called global warming. Scientists also think…

DK Science: Pollution

AIR POLLUTIONGREENHOUSE EFFECTACID RAINACCIDENTAL POLLUTIONFIND OUT MOREPollution is waste that we put into the environment. It can harm plants and animals, including humans. Pollution comes…

air pollution

(Encyclopedia) air pollution, contamination of the air by noxious gases and minute particles of solid and liquid matter (particulates) in concentrations that endanger health. The major sources of air…

Water, Water Everywhere

The Question: Do you know the percentage of the earth's surface covered by water? The Answer: About 70.8% of the Earth's surface is covered by…

water rights

(Encyclopedia) water rights, in law, the qualified privilege of a landowner to use the water adjacent to or flowing through his property. The privilege, also known as riparian rights, may be modified…