uniting all americans to ensure wildlife thrive in a rapidly changing world, the national wildlife federation builds upon our nation's conservation heritage for present and future generations.

world wildlife fund - the leading organization in wildlife conservation and endangered species. learn how you can help wwf make a difference.

we're working around the world to protect the lands and waters on which all life depends and fight climate change. join us.

defenders of wildlife works on the ground, in the courts, and on capitol hill to protect and restore imperiled wildlife and habitats across north america. together, we

established in 1964, the iucn red list of threatened species has evolved to become the world’s most comprehensive information source on the global conservation status of animal, fungi and plant species.

celebrating great outdoors month on the continental divide national scenic trail

we provide science about the natural hazards that threaten lives and livelihoods; the water, energy, minerals, and other natural resources we rely on; the health of our ecosystems and environment; and the impacts of climate and land-use change. our scientists develop new methods and tools to supply timely, relevant, and useful information about the earth and its processes.

the center for biological diversity works through science, law and creative media to secure a future for all species, great or small, hovering on the brink of extinction.

treehugger is the only modern sustainability site that offers advice, clarity, and inspiration for both the eco-savvy and the green living novice.