Region
United States
24
California
3
Alaska
2
Earth (Planet)
2
West (U.S.)
2
Arctic Ocean
1
Contra Costa County
1
Death Valley (Calif. and Nev.)
1
Developing countries
1
Georgia
1
Glacier Bay (Alaska)
1
Glacier Bay Region
1
Iowa
1
Juneau
1
Louisiana
1
Minnesota
1
Missouri River Watershed
1
Outer space
1
Pennsylvania
1
Santa Cruz County
1
Venus (Planet)
1