Every CRS ReportOpen CRS is searchable archive of congressional research reports that were published by the Congressional Research Service (CRS), a service provided by the Library of Congress to legislators needing background information on subjects of all kinds. The reports are not limited to the topics of biology or environmental science, but the archive does contain a great deal of research on these subjects, environmental science in particular, as congress is often dealing with research on climate change and the impact of industry and development on the environment as it develops legislation related to these issues.