Some listings are actually links to categories elsewhere in the directory. This category is for scientifically-oriented organizations. Environmental advocacy groups are listed in Society:Issues:Environment:Organizations.
Listed as Subcategories:
"Governmental" includes national government agencies and international intergovernmental agencies (such as United Nations organizations).
"Industry Groups" lists environmental sites maintained by private corporations or industry consortia.
"Professional Associations" are organizations of professionals engaged in various environmental fields.
"Research Institutes" are operated by universities, governments, foundations, and NGOs. They are engaged primarily in acquisition and dissemination of scientific and technical knowledge about the environment or its protection.