Students, faculty, staff and administrators at the University of Colorado at Boulder will convene for the fifth annual "Campus Earth Summit," April 20-21, to discuss environmental topics from alternative transportation to sustainable development on campus. The summit, which is free and open to the public, provides a forum to review the campusÂ’ environmental performance and to examine the potential for reducing environmental impacts. The goal is to bring together people who may not normally communicate with each other for a cross-fertilization of ideas.