Net worth $179.3 billion, the Walton Family is the richest family in the world. In 1987, Sam Walton endowed a charitable foundation; it was primarily focused on charter schools, but also extended its program to include environmental issues particularly around water.

Education and Global sustainability

The Walton Family Foundation work in three areas: improving K-12 education, protecting rivers and oceans and the communities they support, and investing in their home region of Northwest Arkansas and the Arkansas-Mississippi Delta. The mission of the foundation is tackling tough social and environmental problems with urgency and a long-term approach to creating access to opportunities for people and communities. While the vision is to live in a world where people can accomplish anything when they have opportunity and encouragement.