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  • Thermoregulation in Dinosaurs

    Thermoregulation in Dinosaurs

    Data Point

    Grady and colleagues compared dinosaur fossil evidence with evidence from living animal species to shed more light on the type of thermoregulation that dinosaurs used—ectothermy, endothermy, or mesothermy.

  • Comparative Anatomy of the Domestic Chicken

    Comparative Anatomy of the Domestic Chicken

    Click & Learn

    Trace the evolutionary history of birds by comparing the shapes and structures of certain bones in a chicken to those of some of its extinct and living relatives. Also available in Spanish.

  • 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...

  • Reading Primary Sources: Darwin and Wallace

    Reading Primary Sources: Darwin and Wallace

    Activity

    This activity serves as a supplement to the HHMI short film The Origin of Species: The Making of a Theory. Students read and analyze excerpts from texts written by Charles Darwin and Alfred Russel Wallace and answer questions about the information presented, developing their nonfiction reading comprehension.

  • Evolution: Fossils, Genes, and Mousetraps

    Evolution: Fossils, Genes, and Mousetraps

    Lecture

    Leading evolution educator Ken Miller discusses the controversy surrounding the teaching of evolution.

  • 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?