The World Wildlife Fund's Action Network is sponsored by World Wildlife Fund, the largest conservation organization in the world. For over 45 years, WWF has worked to save endangered species, protect endangered habitats, and address global threats such as deforestation, overfishing, and climate change. Known worldwide by its panda logo, WWF works in 100 countries on more than 2,000 conservation programs. WWF has 1.2 million members in the United States and nearly 5 million supporters worldwide. For more information on WWF, visit our main website.