The Goldman Environmental Foundation has announced the six recipients of the 2011 Goldman Environmental Prize, an annual $150,000 award that honors grassroots environmental leaders from each permanently inhabited continent.

Now in its twenty-second year, the Goldman Environmental Prize program honors emerging leaders working to protect the environment and their communities. This year's recipients include Raoul du Toit of Zimbabwe, who coordinated conservation initiatives that helped develop and maintain the largest remaining black rhino populations in his country; Dmitry Lisitsyn of Russia, who fought to protect Sakhalin Island's critical endangered ecosystems while also demanding safety measures from one of the world's largest petroleum development projects; and Ursula Sladek of Germany, who created that country's first cooperatively owned renewable power company in response to her country's expanded reliance on nuclear energy. Other winners include Prigi Arisandi of Indonesia, who led a local movement to stop industrial pollution from flowing into a river that provides water to three million people; Hilton Kelley of Texas, who is fighting for communities living in the shadow of polluting industries; and Francisco Pineda of El Salvador, who led a citizens' movement that stopped a goldmine from destroying his country's dwindling water resources.

The winners were honored at an invitation-only ceremony on Monday at the San Francisco Opera House and will be recognized at a smaller ceremony on Wednesday at the Smithsonian Institution's National Museum of Natural History. This year's prize events will be dedicated to Richard N. Goldman, who passed away last November at the age of 90.