revised : January 2015

American Museum of Natural History
http://www.amnh.org/

Earthwatch
http://www.earthwatch.org

Electronic Zoo
http://netvet.wustl.edu/e-zoo.htm

Encyclopedia of the Environment
Ruth A. Eblen and William R. Eblen, editors; Houghton Mifflin Co., Boston 1994

Envirolink
http://www.envirolink.org/

Europa : Environment (Nature and Biodiversity)
http://ec.europa.eu/environment/nature/

European Forest Institute
http://www.efi.int/portal/

Friends of the Earth
http://www.foe.org

Global Change Master Directory
http://gcmd.gsfc.nasa.gov/

Greenpeace
http://www.greenpeace.org

Infoplease : Environment & Nature
http://www.infoplease.com/ipa/A0004704.html

International Union for Conservation of Nature
http://www.iucn.org/

Institute of Global Environment and Society
http://grads.iges.org/home.html

National Wildlife Federation (USA)
http://www.nwf.org/

Natural History Museum (London)
http://www.nhm.ac.uk/

Natural Resources Defense Council
http://www.nrdc.org/

Oceanography (Scripps Institution)
https://scripps.ucsd.edu/

Organic Gardening
http://www.organicgardening.com/

Oxford Companion to the Earth, The
edited by Brian J.Skinner and Paul L. Hancock
Oxford University Press, Oxford, 2001

Rain Forest Portal
http://www.forests.org/

Refdesk : Environment & Nature
http://www.refdesk.com/nature.html

Resilience Alliance
http://www.resalliance.org

Sierra Club
http://sierraclub.org/

Unep (United Nations Environment Programme)
http://www.unep.org

Univers Nature (Français)
http://www.univers-nature.com

World Conservation Monitoring Centre (United Nations Environment Programme)
http://www.unep-wcmc.org/

World Resources Institute
http://www.wri.org/

World Wide Fund for Nature
http://www.panda.org/

Worldwatch Institute
http://www.worldwatch.org/

World Wildlife Fund
http://www.wwf.org