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The Cell: an Image Library
Free repository of annotated images, videos, and animations of cells from a variety of organisms, showcasing cell architecture, intracellular functionalities, and both normal and abnormal processes.
NatureServe Explorer: An Online Encyclopedia of Life
Conservation information on plants, animals, and ecological communities in the U.S. and Canada.
Profiles in Science
National Library of Medicine celebrates leaders in biomedical research and public health
Public Library of Sciences
See links to full text open access journals in box on right of page.
Yale Environment 360
Opinion, analysis, reporting, debate