Biology

Work wildlife films and photographs, with more than 1,500 of the world's leading filmmakers and photographers actively contributing to the project.

The Biodiversity Heritage Library (BHL) is the world’s largest open access digital library for biodiversity literature and archives.

The Encyclopedia is a free, fully searchable collection of content contributed by scholars, professionals, educators, practitioners and other experts.

Official website of the National Library of Medicine, the medical library of the U.S. federal government. Offers information resources in areas such as biomedical literature, health data standards, and the history of medicine.

The PLANTS Database provides standardized information about the vascular plants, mosses, liverworts, hornworts, and lichens of the U.S. and its territories.