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166121 Studies found for: States

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Map Legend
Region Name Number of Studies
World 166,121
Africa [map] 2,849
Central America [map] 2,661
East Asia [map] 7,580
Japan 2,604 [studies]
Europe [map] 21,108
Middle East [map] 4,902
North America 147,345
Canada [map] 10,689 [studies]
Mexico 2,463 [studies]
United States [map] 145,945 [studies]
North Asia [map] 5,010
Pacifica [map] 5,656
South America [map] 4,705
South Asia [map] 1,794
Southeast Asia [map] 2,578

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Studies with no locations are not included in the counts or on the map.

Studies with multiple locations are included in each region containing locations.