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  • The Origin of Species

    The Origin of Species

    Collection

    Our planet has millions of species, including thousands of mammals, fish, birds, and reptiles, and even more butterflies, beetles, and other animals, each adapted to one of an enormous variety of...

  • Evolution: Constant Change and Common Threads

    Evolution: Constant Change and Common Threads

    Lecture

    How has the amazing diversity of plants and animals evolved? What can fossils, butterflies, and stickleback fish tell us about the deep common ancestry of all living forms?