In recent years, scholars and practitioners have focused increasing attention on the role of information in achieving environmental policy goals. This paper develops a framework for understanding how information is used in making environmental policy, and compares the kinds of information development and communication efforts undertaken by the U.S. Environmental Protection Agency (EPA) and the European Environment Agency (EEA). The analysis suggests that institutional factors such as organizational structure and the mix of policy instruments used by the agency affect the kinds of information efforts undertaken. It also suggests possible areas of focus for environmental information efforts within the EPA and the EEA. These suggestions and the framework provided may also be of use to other environmental agencies.