See Studies on Map

On the map below, click on a region to show a more detailed map (when available) or see a list of studies with locations in that region (when a detailed map is not available).

Region Name Number of Studies World 495,219 Africa 19,335 Central America 3,996 East Asia 65,979 Japan 7,936 Europe 141,515 Middle East 27,860 North America 192,492 Canada 28,692 Greenland 6 Mexico 4,971 United States 172,742 North Asia 8,166 Pacifica 11,216 South America 14,665 South Asia 9,508 Southeast Asia 10,358

Tips: Click on a region name link to show a map of that region Click on a study count link to see a list of studies in that region. Use your browser's back button to return to this list and view studies in another region. Studies with no locations are not included in the study counts or on the maps. Studies with multiple locations are included in each region where the study has locations.