California Churches St. Mark Presbyterian Church hosts an Earth Day Service exploring relationships between cliamte change and poverty. Solana Beach Presbyterian Church in Solana Beach, CA upgraded its incandescent lamps with fluorescent lighting, added occupancy sensors, installed LED exit signs and new air conditioning and heating systems. Wilderness Ministires Under the leadership of pastor Steve Harrington (whose doctoral thesis focused on the theological basis of Christian wilderness adventure ministries), Sunnyvale Presbyterian Church, near San Jose, CA, offers wilderness retreats and expeditions that are open to participants from outside the congregation. St. Francis of Assisi Catholic Church held a "Lenton Fast for Sister Water" United Methodist Church of Santa Cruz builds green. St. Mark Presbyterian Church is named the Audobon Societies Greenest Congregation.