Want a louder voice for your cause? Make a movie. Big River Man, the documentary about Martin Strel, has spread the word about his swims. "Having something tangible to show is the best way to present an idea," says Ben Knight, co-director of Red Gold, the film that broke the story on the mining threat to salmon in Alaska's Bristol Bay. Need skills? Learn camera technique, how to create a storyline and direct, and Final Cut Pro at one of Serac's Adventure Film Schools, which take place from Colorado's backcountry to Everest Base Camp (adventurefilmschool.com). Then submit your work to a festival like Adventure Film (adventurefilm.org), in Boulder, or Taos Mountain Film (mountainfilm.net), which considers first-time directors.