Word: carbons
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Dates: during 1990-1999
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Although scientists still disagree over whether the threat of global warming is an imminent problem, new findings by a team of Harvard researchers strongly suggest that current high levels of carbon dioxide in the atmosphere will profoundly alter the ecosystem...
...study reports that many types of plants tend to grow more quickly in a carbon dioxide-rich environment, but that these plants contain fewer nutrients than plants grown in a normal environment. Consequently, these nutrient deficient plants take longer to decompose, which in turn leaves fewer nutrients available in the ground for new plants in the spring...
...attempt to determine the effects of atmospheric carbon dioxide levels on the ecosystem, Bazzaz and Fajer also examined the reactions of various insect populations to such nutrient deficient plants...
...against smog may soon get a new high-tech weapon. A device being tested in Provo, Utah, uses an infrared beam, computer software and a video camera to add up the carbon monoxide and hydrocarbons billowing from the tail pipes of passing cars -- and to automatically record their license numbers...
...device proves accurate, it could go into widespread use next year, when the Clean Air Act of 1990 will require 18 states and 33 cities that have excessive carbon monoxide or ozone levels to begin extensive pollution tests, including on-road exams...