"Water permeates this document," Burkett said. She said the U.S. Southwest will get drier and hotter and that will be a crucial issue.
The nearly 200-page report has chapters examining the effects of global warming in each region — from coastal zoning officials who must consider sea rise to Midwestern farmers recalculating their planting seasons.
Federal law requires comprehensive reports on global warming's effects every four years. An environmental group sued to force the Bush administration to issue an early draft of this report last summer because one had not been written since 2000. Since that time, the language has become stronger, but mostly because of fresher research, scientists said.
"The emphasis has shifted from just looking at the physical climate science to adapting to change," Burkett said in an interview.
On the Net: U.S. Global Change Research Program: tinyurl.com/m4rdnp
Associated Press Writer Dina Cappiello in Washington contributed to this report.
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