PRISMA is an exciting new computer tool developed by Conservation International to present and publish databases, to generate reports and training materials, and to provide information about important tropical ecosystems. PRISMA's capacity not only to publish all types of data related to a region--maps, databases, documents, images, videos, and sounds--but also to present ideas and interpretations of this data through multimedia presentations makes it a powerful tool for conservation. PRISMA's geographic interface is based on Esri's MapObjects LT, demonstrating the power and importance of Esri's software.