"Climate." . . "Conservation of Natural Resources." . . . "Our changing planet : the FY 2001 U.S. Global Change Research Program : a report"@en . . . . "FY 2001 U.S. Global Change Research Program"@en . . "Our changing planet the FY 2001 U.S. Global Change Research Program : a report"@en . . . . . . . . . . "Fiscal year 2001 U.S. Global Change Research Program"@en . . . . . . . . . . . . "Environment." . . . . "Public Policy." . .