[The Nature Conservancy](https://www.charitynavigator.org/index.cfm?bay=search.summary&orgid=4208)
>The Nature Conservancy is a leading conservation organization working around the world to protect ecologically important lands and waters for nature and people. Since our founding in 1951 we have protected more than 119 million acres of land and 5,000 miles of rivers worldwide - and we operate more than 100 marine conservation projects globally. We have more than one million members. We work in all 50 states and more than 30 countries - protecting habitats from grasslands to coral reefs, from Australia to Alaska to Zambia. We address threats to conservation involving climate change, fire, fresh water, forests, invasive species, and marine ecosystems. We use a science-based approach, aided by our more than 500 staff scientists, and we pursue non-confrontational, pragmatic solutions to conservation challenges.
[Doctors Without Borders](https://www.charitynavigator.org/index.cfm?bay=search.summary&orgid=3628)
>Doctors Without Borders, USA (DWB-USA) was founded in 1990 in New York City to raise funds, create awareness, recruit field staff, and advocate with the United Nations and US government on humanitarian concerns. Doctors Without Borders/Médecins Sans Frontières (MSF) is an international medical humanitarian organization that provides aid in nearly 60 countries to people whose survival is threatened by violence, neglect, or catastrophe, primarily due to armed conflict, epidemics, malnutrition, exclusion from health care, or natural disasters.
>Co-founded by Gary White and Matt Damon, Water.org has transformed hundreds of communities in Africa, South Asia, and Central America by providing access to safe water and sanitation. Water.org traces its roots back to the founding of WaterPartners in 1990. In July 2009, WaterPartners merged with H2O Africa, resulting in the launch of Water.org. Water.org works with local partners to deliver innovative solutions for long-term success. Its microfinance-based WaterCredit Initiative is pioneering sustainable giving in the sector. All of the projects Water.org supports are self-sustaining, with organizational and financial structures in place to allow communities to independently operate and maintain them. Projects have an active water committee governing the operation of the water system, and users paying a water bill to cover the costs of operating and maintaining the water system.
>WildAid's mission is to end the illegal wildlife trade in our lifetimes. WildAid works to reduce the demand for illegal wildlife products, and to promote energy conservation, via global public awareness campaigns. WildAid also strives to create model field conservation programs and to strengthen marine protected areas around the world.