If you're looking for information about how individual species arise, how systematists classify them, or how many species are currently living on the planet, you've come to the right place. For information about species extinction, see the Deep Time/History of Life page.

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This set of resources charts the history of evolutionary thought (including key works of Darwin) and its opposition, the social history of public controversy surrounding evolutionary biology, and misapplications of evolutionary thought in the social, political, and economic realms.

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In its 4.6 billion year history, Earth has undergone massive geologic and climatic changes and provided habitat to an ever-changing cast of life forms. To learn more about the origins and evolution of Earth and its inhabitants, investigate this extensive collection of resources.

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The extensive evidence in support of both fact and theory of evolution comes primarily from studies of the fossil record, molecular sequences, and comparative anatomy. Here you'll find some pivotal resources, on the Web and in books and articles, that summarize the intersecting and overlapping lines of evidence for evolution.

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The human species shares a common genetic code with all other life on this planet, and many of our basic traits are a heritage from the long evolutionary history that took place before the human lineage branched off from the apes around 6 million years ago. Yet we also have our own set of uniquely human adaptations. Explore these resources for more about the evolution of humans and our closest...

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