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Scientists from many disciplines are studying acid
precipitation and its impact. The National Acid
Precipitation Assessment Program (NAPAP), a Federal
program involving representatives from more than a dozen
Federal agencies, has sponsored studies on how acid rain
forms and how it affects lakes, crops, forests, and
materials. Because buildings and monuments cannot adapt to
changes in the environment, as plants and animals can,
historic structures may be particularly affected by acid
precipitation. Scientists are studying effective control
technologies to limit the emissions from power plants and
automobiles that cause acid rain. The impact and
usefulness of regulations that would require limits on air
pollution are also being studied. Finally, scientists are
examining the processes of deterioration to find effective
ways to protect and repair our historic buildings and
monuments. Agencies like the National Park Service, which
are charged with protecting and preserving our national
heritage, are particularly concerned not only about the
impact of acid rain but also about making the best choices
for maintaining and preserving our historic buildings and
monuments. |
