Challenges, opportunities, and actions exist in areas where large urban populations interface with natural areas, such as outdoor recreation sites in southern California. Challenges in the interface include intense recreation use, public safety issues, and complex information strategies. Research results on communications and environmental education offer opportunities to address information challenges. Actions taken include the use of Eco-Teams (delivers environmental messages), a forest information van (delivers information of interest to visitors), and Hawkins Natural Park in South Central Los Angeles (delivers environmental education). Each exemplifies well-planned ways to address interface issues.