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Evolutionary theory

The scientific theory that explains how species evolve over time through the process of natural selection and genetic variation.

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Jan 13, 2026
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How has DNA evidence confirmed and extended Darwin’s ideas about common descent?

DNA evidence has turned Darwin’s qualitative insight that species share ancestry into a quantitative, testable framework by showing that genetic sequences cluster exactly as descent-with-modification ...

Jan 6, 2026

Would most men, given the choice, pick 7 inches as the size of their penis?

Most evidence does not support the idea that "most men, given the choice, would pick 7 inches" for their own penis; population averages are about 5.1–5.5 inches erect and research of partner preferenc...