Since 1990, the U.S. Geological Survey has been participating in the
U.S. Global Change Research Program--a comprehensive and integrated research initiative to understand, assess, predict, and respond to human-induced and natural processes affecting the Earth's environment.
In 1997 the program began a national assessment of the impacts of climate variability
and change. The assessment will apply what research is finding to help understand the
potential impacts, both detrimental and beneficial, that global change may have on
the environment, society, and the economy.
The reports of the National Assessment, completed in 2000, are available from the U.S. Global Change Research Program.
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