(a species of owlet moth (Noctuid)) Some caterpillars, after they emerge from their egg, can increase their weight by 25,000 times.

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What is the evidence?

Both fossils from long ago and animals alive today show us evidence for evolution and help us to better understand how the process works.

  • Extinct evidence
    Extinct evidence (video)

    The fossil remains of animals and plants tell researchers a lot about what the world was once like and provide a lot of evidence for evolution.

  • Living evidence
    Living evidence (video)

    While evolution of a species frequently works at a very slow pace, careful analysis of the natural world reveals that evolution can also move at an astounding rate.

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