Database of verified butterfly and moth records in the United States and Mexico. Includes distribution maps, photographs, species accounts, and species checklists for each county in the U.S. and each state in Mexico.
Database of natural lipids including fatty acids, glycerolipids, sphingolipids, steroids, and various vitamins. Contains more than 6000 unique molecular structures, their lipid names, spectral information, and literature information.
Provides information on the classification, structural features, natural history, ecology and evolutionary relationships of bryophytes (mosses, liverworts and hornworts).
Digitized journals and books in biodiversity spanning 200 years from the collections of ten major natural history museum libraries, botanical libraries, and research institutions.
Freely accessible research database focusing on the relationship between human beings and the environment (subjects cover law, agriculture, education, health, technology, etc.) Contains scholarly and general interest titles, government documents, and reports.
Encyclopedia on the structure and function of proteins, RNA, DNA, and other macromolecules, and their assemblies and interactions with small molecules.