St. Olaf students can participate in any of eight environmental organizations on campus, including the Wendell Berry House, Naturals Lands Workers, sustainability-themed honor houses, and the St. Olaf Environmental Coalition. The latter has 30 active members and organized an Earth Week Fair that brought together the campus and local community for tree planting and an outdoor fair. The college also participates in a national energy challenge, competing with other schools to conserve energy. An environmental senator within the student government evaluates capital proposals by the student government for their environmental impact.