The world’s largest open access digital library for biodiversity literature and archives.

The most complete authoritative list of the world's species - maintained by hundreds of global taxonomists

A complete collection of Darwin's publications, including manuscripts and private papers.

An international effort to raise awareness and understanding of living nature by providing trusted information on all known species.

The world’s most comprehensive information source on the global extinction risk status of animal, fungus and plant species.

A national resource for molecular biology information, NCBI creates public databases, conducts research in computational biology, develops software tools for analyzing genome data, and disseminates biomedical information.

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

PubMed Central® (PMC) is a free full-text archive of biomedical and life sciences journal literature at the U.S. National Institutes of Health's National Library of Medicine (NIH/NLM)

Access the massive stores of federally funded scientific research results, including scientific and technical reports, peer-reviewed scholarly publications, digital data, and more.

Breaking news about the latest discoveries in science, health, the environment, technology, and more -- from leading universities, scientific journals, and research organizations. New stories added daily.

Explore the relationships between 2,235,076 species and wonder at 105,459 images on a single zoomable page.