Greenpeace
Greenpeace is the world's most effective environmental activist group dedicated to the issues of climate change, saving our ancient forests, stopping pollution, ending the nuclear threat, abolishing nuclear weapons, stopping genetic engineering, saving our oceans, and advocating sustainable trade.
http://www.greenpeace.org/international/
PETA Nederland
Grassroots work is essential to the success of the animal rights movement, and peta is committed to helping local activists around the world organize to protect animal rights.
http://www.peta.nl/
Zoo Magazine
Zoo Magazine
http://www.zoomagazine.de/