- The largest international network of environmental groups in the world, covering 52 countries. Researchers will find the "Environmental Campaigns" page useful for tracking six major areas of concern ranging from sustainable development to energy.
Useful links from this page include the National Environmental Satellite Data and Information Service. A basic starting point for research involving the environment, climate, coastal issues, etc.
- Operator of the largest private system of nature sanctuaries in the world, with over 1,500 in the United States. News of conservation programs underway may be found under the "Where We Work" menu item.
This site offers access to the homepages of all national historic sites and monuments, recreation areas and parks maintained by the service. Regional maps showing park locations are included.
