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  • Using the Scientific Process to Study Human Evolution

    Using the Scientific Process to Study Human Evolution

    Click & Learn

    Paleoanthropology provides an excellent example of the scientific process at work. Also available in Spanish.

  • Skeletons Reveal Human and Chimpanzee Evolution

    Skeletons Reveal Human and Chimpanzee Evolution

    Click & Learn

    Comparing features of a 4.4-million-year-old fossil skeleton to those of human and chimpanzee skeletons sheds light on our evolutionary history.

  • Human Evolution Within the Tree of Life

    Human Evolution Within the Tree of Life

    Poster

    The poster from the 2011 Holiday Lectures on Science, Bones, Stones and Genes: The Origin of Modern Humans. It provides a unique look at the classic "tree of life" and features a timeline of various hominid fossils and their stone tool usage.

  • Worksheet for The Stickleback Evolution Virtual Lab

    Worksheet for The Stickleback Evolution Virtual Lab

    Activity

    A worksheet that guides students through The Stickleback Evolution Virtual Lab. The virtual lab lets students learn firsthand the methods for analyzing body structure in stickleback collected from lakes and fossils recovered from a quarry. Students measure, record, and graph their results to discover evolutionary patterns.

  • Hominid Paleobiology

    Hominid Paleobiology

    Lecture

    (1 hr 33 min 25 sec) The hominid fossil record of the past six million years gives us surprising insights into the path of human evolution.

  • Stone Tools and the Evolution of Human Behavior

    Stone Tools and the Evolution of Human Behavior

    Lecture

    (58 min 31 sec) Stone tools are well-preserved evidence of past human activity.

  • Human Evolution and the Nature of Science

    Human Evolution and the Nature of Science

    Lecture

    (29 min 1 sec) How reasoning and evidence are used to understand human evolution.

  • Bones, Stones, and Genes: The Origin of Modern Humans

    Bones, Stones, and Genes: The Origin of Modern Humans

    Lecture

    Where and when did humans arise? What distinguishes us from other species? Did our distant ancestors look and behave like us?

  • Stratigraphic Principles

    Stratigraphic Principles

    Clip

    (2 min 21 sec) Dr. John Shea demonstrates the two main principles in the study of rock layers: superposition and association.

  • Classifying Stone Tools

    Classifying Stone Tools

    Clip

    (3 min 4 sec) Prehistoric stone tools are classified into six broad technological modes by the level of sophistication and method of fabrication.

  • Rift Valleys of Africa and Plate Tectonics

    Rift Valleys of Africa and Plate Tectonics

    Clip

    (2 min 14 sec) African rift valleys were formed by the separation of tectonic plates. Water flows down to the valley floors, creating rivers and lakes.

  • Hardening Fragile Fossils for Extraction

    Hardening Fragile Fossils for Extraction

    Clip

    (19 sec) Due to the delicate nature of fossils, a hardening chemical is dripped onto every fossil before it is removed from the soil.

  • The Delicate Process of Excavating and Cleaning Fossils

    The Delicate Process of Excavating and Cleaning Fossils

    Clip

    (1 min 27 sec) Fossils are extremely fragile. Scientists remove them in a protective layer of plaster and clean sand away one grain at a time.

  • Floods Supply Sediments for Fossil Formation

    Floods Supply Sediments for Fossil Formation

    Clip

    (2 min 42 sec) The floor of a rift valley is prone to periodic floods that carry in fine silt--the sedimentary matter responsible for fossil formation.

  • Making Stone Tools by Flintknapping

    Making Stone Tools by Flintknapping

    Clip

    (1 min 23 sec) Stone tools similar to those found at prehistoric archaeological sites can be made by fracturing rocks, a technique known as flintknapping.

  • Dung Beetles and their Fossilized Evidence

    Dung Beetles and their Fossilized Evidence

    Clip

    (39 sec) Fossilized dung beetle balls are part of a comprehensive fossil collection project to reconstruct the habitat of Ardipithecus ramidus.

  • Fossil Evidence and Evolution

    Fossil Evidence and Evolution

    Poster

    The poster from the 2005 Holiday Lectures on Science, Evolution: Constant Change and Common Threads. Place the fossils in the right geological era, period, and epoch. (This poster is designed to printed at a maximum size of 29.5" x 23.5".)

  • 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?

  • Stickleback Environment

    Stickleback Environment

    Clip

    (1 min 27 sec) At the end of the ice age, the retreating ice sheet created many new lakes, some of which were colonized by sticklebacks.

  • Fossil Record of Stickleback Evolution

    Fossil Record of Stickleback Evolution

    Clip

    (2 min 34 sec) A quarry site in Nevada carries the evolutionary history of a population of stickleback fish that resided there when it was a freshwater lake.

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