Center for International Environmental Law
A nonprofit law firm specializing in international environmental law and policy. The website includes extensive online publications relating to biodiversity, biotechnology, climate change, human rights & the environment, pollution, and trade and the environment.

ECOLEX: the Gateway to Environmental Law
A database operated by FAO, IUCN, and UNEP. Links to treaties, national legislation, court decisions, and other literature.

Environmental and Natural Resources Law
Links to international organizations, treaties, and environmental law associations.