| Theme | Country |
| Acid Rain | France, Micronesia |
| Civic Virtues | Spain |
| Climate Change | Belgium, Bolivia, Aruba, Faroe Is., Paraguay |
| CO2 Research | Austria, French Southern and Antarctic Territories |
| Conferences | Belarus, Brazil, Poland, Germany, Japan, Sudan, South Africa, Morocco, Maldives |
| Cooperation on Antarctic Research | Russia and Australia |
| Desertification | Bolivia, Brazil, Sudan, United Arab Emirates |
| Energy Conservation | China |
| Environmental Care/Protection | Cambodia, China, Indonesia, Lebanon, Tonga |
| Forest Conservation and Tree Planting | Argentina, Japan, Mexico, Micronesia |
| Glacier Retreat and Melting | South Georgia, Switzerland |
| Global Warming | Aruba, Bolivia, China, Faroes, Israel, Maldives, Norway, Tuvalu, U.S. |
| Greenhouse Effect | Kiribati, Tuvalu, Micronesia |
| Ozone Layer | Brazil, Burundi, French Southern and Antarctic Territories, Germany |
| Preserve Polar Regions, Including International Polar Year | 30 countries, including Argentina, Belarus, Brazil, Canada, Chile, China, Comoros Is., Dominican Republic, Finland, Greece, Iceland, India, Mali, Maldives, Mozambique, Nicaragua, Romania, Russia, Slovenia, South Korea, U.S. |
| Projection of El Niño | Peru |
| Sea Level Rise | Kiribati |
| Sustainability | Brazil, South Africa |
| Water Protection Issues | Bangladesh, France, Portugal |
| Weather Extremes | Belize, New Zealand, Peru |
| World Environment Day | China, Egypt, Indonesia, Mexico, Sierra Leone, Thailand, Turkey |