Region
United States
1,343
Afghanistan
80
Japan
66
India
54
Tropics
47
Mexico
42
China
40
Great Britain
40
Canada
35
Alaska
33
Korea (South)
31
Outer space
28
Australia
25
Netherlands
24
Russia (Federation)
24
Italy
23
Africa
22
Brazil
22
Greece
22
Ukraine
22
Poland
20
California
19
France
19
Asia
18
Germany
18
Argentina
16
Arizona
16
Black Hills National Forest (S.D. and Wyo.)
16
Colorado
16
Ecuador
16
Egypt
15
Europe
15
European Union countries
15
Iraq
15
Oregon
14
Philippines
14
Africa, Sub-Saharan
13
Developing countries
13
Israel
13
Jordan
12
Latin America
12
Malaysia
12
Norway
12
Tongass National Forest
12
Czech Republic
11
El Salvador
11
Finland
11
Guatemala
11
Indonesia
11
Morocco
11
more ...