A history and explanation of the history of acid rain and the dangers posed by industrial carbon and sulfur emanations that interact with airborne moisture to produce acid rain. The program provides chemical definitions, illustrates geological and meteorological interactions, and traces the sources of acid precipitation. It also demonstrates ecological concepts, and suggests possible solutions. (20 minutes)

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		Fit to Drink This program traces the water cycle, beginning with the collection of rainwater in rivers and lakes, in great detail through a water treatment plant, to some of the places where water is used, and finally back into the atmosphere. Treatment of the wa...(more details)
		The Greenhouse Effect A life-sustaining envelope of gas surrounds the earth. This atmosphere contains oxygen, CO2, water vapor, and other gases-it is what generates climate, which affects all living beings. This program analyzes the sun's gradual brightening and the relat...(more details)
		Clean Water We use water for drinking, cooking, washing, and cooling, and never consider that every day, in hundreds of ways, each of us is contributing to water pollution. Compared to industrial pollution, the individual's contribution is small, but collectivel...(more details)
		Seas Under Siege Sometimes washing up on beaches in the form of used syringes, other times hidden in the belly of a fish, toxic contamination-the inescapable consequence of toxic wastes flowing or being dumped into the ocean-is a form of pollution found off all coast...(more details)
		Global Warming The history of Earth has been a history of temperature change; people and animals have historically moved to better climes, richer pastures, and areas of more abundant food. The problem now is that "somewhere else" is already occupied; meanwhile, tem...(more details)

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