Program On Line Pre-registration has closed. On-site registration will be available at the Fiesta Americana Merida Housing Information This conference is designed to develop strategies to increase international access to ecological knowledge and to increase collaboration among environmental scientists. The conference is organized around three sub-themes:   The conference will feature keynote speakers, oral presentations, and poster sessions. The Honorable Bruce Babbitt, former U.S. Secretary of the Interior and Governor of Arizona, will present the opening plenary address. Oral presentations and posters will include both invited submissions and contributions from attendees. Workshops will also be organized around the sub-themes, and scientific field trips in the Yucatan will be offered. Conference co-chairs: Dr José Sarukhán (National University of Mexico) and Dr. Jeff Herrick (US Department of Agriculture), a multi-national conference committee, and local hosts from Universidad Autonoma de Yucatán and the Centro de Investigación Científica de Yucatán. Those from all sectors with an interest in the intersection of global trade and the environment - the academic research community, government agencies, non-governmental organizations, and the private sector. Students will have the opportunity to present papers and posters.