The Goldman Environmental Prize is the world's largest prize program honoring grassroots environmentalists. Founded in 1990 by Richard and Rhoda Goldman, the Goldman Environmental Prize awards $900,000 annually to environmental heroes from six continental regions. Nominated confidentially by a network of renowned environmental organizations and environmental experts, recipients are chosen for their sustained and important environmental achievements. The Prize offers these environmental heroes the recognition, visibility and credibility their efforts deserve. The prize includes a no-strings-attached award of US$150,000 per recipient. Since the Goldman Environmental Prize was established in 1990, a total of $13.2 million has been awarded to 139 honorees from 79 countries, as of 2010. The Goldman Environmental Prize is headquartered in San Francisco, California.