Word: carbonation
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Dates: during 1990-1999
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...heavy industrial pollution and the burning down of large areas of forest land have been increasing the levels of carbon dioxide in the atmosphere for over a century, many scientific studies have shown...
...while these studies have sparked much talk about the Greenhouse Effect, the work of one Harvard biologist points to other adverse environmental effects--that the high carbon dioxide content is making plants less healthy and ultimately throwing the ecosystem off balance...
Timken Professor of Science Fakhri A. Bazzaz has studied the effects of carbon dioxide on plants and plant growth, and has found that more carbon causes plants to grow faster, but deprives them of adequate nutrients...
Until the 1800s, carbon dioxide levels in the atmosphere had remained relatively constant for the last 100,000 years, Bazzaz says...
...surface of Venus has never seemed very hospitable. Temperatures hover around 470 degrees C (900 degrees F), the result of a runaway greenhouse effect, and the pressure of its atmosphere, thick with carbon dioxide and sulfuric acid, is some 90 times that of Earth's. Lead would flow like water on Venus, and water cannot have existed in liquid form for perhaps a billion years...