Offers selections addressing animal diversity, extinction, and evolution. Explores mechanisms and evidences of evolution.

Features a book by Peter J. Bryant, and includes a slideshow. Offers chapters on deforestation and protected areas.

Describes why this lungless salamander from the family Plethodontidae is a classic example of Darwinian evolution.

Explore the impact of isolated reproduction and geography on species, as well as speciation and extinction rates, and the genetics fundamentals.

Read a definition of the biological mechanism proposed in Charles Darwin's evolution theory. See the "Scientific Discoveries" sidebars.

Encyclopedia article presents a definition of the term in its biological context and describes the process.

Essay from the Talk Origins Archive provides a concise, detailed overview of speciation. Includes a long list of references.

Kenneth B. Cumming reviews the species problem in the May 1991 issue of "Vital Articles on Science/Creation."

Discussion of genetic drift explains its place in the neutralist-selectionist debate over the importance of neutral mutations.

Rutgers University's Jody Hey addresses the debate on the meaning of the word "species" and the methods of species identification.

Offers links to articles on the "Selfish Gene" and "Million Year Breaks" theories.