MIT's Open Courseware's Biology pages
Provides lecture notes, lectures, images, textbooks, and other information to help students learning biology.
Offers the complete works of Darwin and other information related to Charles Darwin.
Site with activities and information about DNA and genetics.
Offers information on thousands of species.
Collected by U of Illinois Libraries.
Provides information on animal natural history, classification, distribution, and conservation and is maintained by the University of Michigan
Articles about the latest ideas in Biology.
Award winning popular science news web site provides articles about discoveries in all fields of physical biology.