The World Food Programme (WFP) is the food aid branch of the United Nations, and the world's largest humanitarian agency. WFP provides food, on average, to 90 million people per year, 58 million of whom are children. From its headquarters in Rome and more than 80 country offices around the world, WFP works to help people who are unable to produce or obtain enough food for their families.

World Food Programme profile at CharityNavigator

Water For People helps those in developing countries improve their quality of life by supporting the creation of locally sustainable drinking water resources, sanitation facilities and health and hygiene education programs. Our vision is a world where all people have access to safe drinking water and sanitation; a world where no one suffers or dies from a water- or sanitation-related disease.

Water For People profile at CharityNavigator

Teach for America is the national corps of outstanding recent college graduates and professionals of all academic majors and career interests who commit two years to teach in urban and rural public schools and become leaders in the effort to expand educational opportunity and to ensure that more students growing up today in our country's lowest-income communities are given the educational opportunities they deserve.

Teach For America profile at CharityNavigator

Doctors Without Borders (Médecins Sans Frontières) is an independent international medical humanitarian organization that delivers emergency aid to people affected by armed conflict, epidemics, natural or man-made disasters, or exclusion from health care in nearly 60 countries.

Doctors Without Borders profile at CharityNavigator

The mission of the World Wildlife Fund (WWF) is the conservation of nature. Using the best available scientific knowledge and advancing that knowledge where we can, we work to preserve the diversity and abundance of life on Earth and the health of ecological systems.

World Wildlife Fund profile at CharityNavigator

Oceana campaigns to protect and restore the world's oceans with teams of marine scientists, economists, lawyers and advocates around the world striving to win specific and concrete policy changes to reduce pollution and to prevent the irreversible collapse of fish populations, marine mammals and other sea life.

Oceana profile at CharityNavigator