| Autor: |
Kahl, Jeffrey S.1, Stoddard, John L.2, Paulsen, Steven G.3, Haeuber, Richard4, Birnbaum, Rona5, Deviney, Frank A.6, Webb, James R.6, DeWalle, David R.7, Sharpe, William7, Driscoll, Charles T.8, Herlithy, Alan T.9, James H. Kellogg10, Murdoch, Peter S.11, Roy, Karen12, Webster, Katherine F.13, Urquhart, N. Scott14 |
| Předmět: |
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| Zdroj: |
Environmental Science & Technology. 12/15/2004, Vol. 38 Issue 24, p485-490. 6p. |
| Abstrakt: |
The article discusses about amendment of some acts. In the late 1950's, reports first established that acidic lakes existed in North America and Europe. However, the effects of acidity on fish were not widely recognized until the mid-1970's. As researchers collected more data over the years, they established more robust links between atmospheric deposition and acidic surface waters (5-8). In the past 30 years, the U.S. Congress has modified the Clean Air Act (CAA) several times. In 1990, legislators passed Title IV of the CAA Amendments (CAAA), which was intended to reduce acidic deposition by regulating sulfur and nitrogen emissions, largely from coal-burning power plants. These reductions built on a 20-year trend of decreasing sulfur deposition. |
| Databáze: |
GreenFILE |
| Externí odkaz: |
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