Colorado 1,021
United States 861
Denver 108
Boulder 85
Boulder County 67
Mexico 67
China 62
Developing countries 57
France 53
New Mexico 52
Germany 51
Alaska 50
Wyoming 49
California 47
Front Range (Colo. and Wyo.) 47
Saudi Arabia 47
Japan 45
West (U.S.) 40
Great Britain 39
Arizona 38
England 38
Utah 36
Indonesia 31
Nevada 30
Earth (Planet) 29
Montana 27
Nunavut 27
Soviet Union 26
North America 25
Arctic regions 24
Baffin Island 24
Italy 24
Mexico, Gulf of 23
Thailand 23
India 22
Puerto Rico 22
Canada 21
Colombia 21
New York (State) 19
Sun 19
Mars (Planet) 18
Rocky Mountains 18
Southwest, New 18
Texas 18
Africa 17
Antarctica 17
Korea (South) 17
Peru 17
Taiwan 17
Venezuela 17
Costa Rica 16
Europe 16
Spain 16
Jefferson County 15
Nubia 15
Australia 14
Chile 14
Hawaii 14
Idaho 14
Jupiter (Planet) 14
New York 14
Bighorn Basin (Mont. and Wyo.) 13
Greece 13
Niwot Ridge 13
Rome 13
Brazil 12
Iceland 12
Latin America 12
Tropics 12
Egypt 11
Greenland 11
Kansas 11
Russia (Federation) 11
Tanzania 11
Denver Metropolitan Area 10
Iran 10
Larimer County 10
Nebraska 10
Norway 10
South Africa 10
Austria 9
Colorado Springs 9
Eagle County 9
El Salvador 9
Germany (West) 9
Great Plains 9
Korea 9
Massachusetts 9
Middle East 9
Nepal 9
Philippines 9
Rocky Mountain National Park 9
Summit County 9
Venus (Planet) 9
Aleutian Islands 8
Argentina 8
Colorado River (Colo.-Mexico) 8
Denver (Colo.) 8
Ecuador 8
El Niño Current 8