Endangered Spaces blog: Show Some Polar Bear Love on Valentine's Day

Earth Watchers and Eco Warriors

5 Gyres - exploring the 5 gyres full of plastic waste.

Alliance to Save Energy - creating an energy-efficient world.

Alliance for Climate Protection - comprehensive solutions for the climate crisis based on science, projects include Repower America and We Can Solve It
American Rivers - thriving by nature

Center for Biological Diversity - welfare of human beings is deeply linked to nature

Defenders of Wildlife - protection of all native wild animals and plants in their natural communities

Environmental Defense Fund - finding the ways that work

ForestEthics - protecting the forests is everyone's business

GreenPeace - risking their freedom and their lives to protect and educate.

League of Conservation Voters - making environmental values into national priorities

Nature Conservancy -protecting nature. preserving life.

Natural Resources Defense Council-protect wildlife and wild places to ensure a healthy environment for all life on earth

National Wildlife Federation - protect wildlife for our children's future

Oceana-the largest international organization focused solely on ocean conservation

Real Climate - Climate science by climate scientists

Sierra Club - original green organization of John Muir

Union of Concerned Scientists : leadership for a healthy planet and a safer world

Wilderness Org - protect America’s wilderness