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Index/Topics/Natural selection

Natural selection

A process by which populations of living organisms adapt and evolve over time.

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Jan 13, 2026
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Is Darwin's theory of evolution true?

Darwin’s theory—that populations change over generations and that natural selection is a mechanism driving adaptive change—stands as one of the most robust and well-substantiated scientific theories, ...

Jan 26, 2026

Does the theory of macroevolution violate the principle of sufficient reason?

The principle of sufficient reason (PSR) holds that every fact or event has a reason, cause, or ground; ary theory—understood as evolution at or above the species level—does not, on its face, violate ...