Dispelling the myth that minorities don't care about protecting the environment is one goal of a Denver conference addressing issues of the environment and race. The Sept. 11-12 conference, sponsored by the Center of the American West at the University of Colorado at Boulder, is expected to attract a sizable audience from many ethnic backgrounds to discuss a broad range of natural resource issues. The keynote speaker will be Robert Stanton, director of the National Park Service and the first African American to hold that position in the agency's 82-year history.