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Showing 1-40 of 44 Resources
  • Metabarcoding

    Metabarcoding

    Clips

    (3 min 38 sec) Dr. Rob Pringle introduces a new method of studying herbivore diets by extracting plant DNA from animal dung.

  • Niche Partitioning

    Niche Partitioning

    Clips

    (4 min 13 sec) Dr. Rob Pringle introduces the concept of niche partitioning with examples drawn from the African savanna.

  • Holiday Lecture 2004 Update—Jeff Friedman

    Holiday Lecture 2004 Update—Jeff Friedman

    Clips

    (3 min 52 sec) HHMI investigator Jeff Friedman provides an update to his 2004 lectures on obesity.

  • Mutations in Cancer

    Mutations in Cancer

    Clips

    (8 min 32 sec) This video provides an overview of the types of genes that, when mutated, can lead to the development of cancer.

  • Young Students Recognize a Transitional Fossil

    Young Students Recognize a Transitional Fossil

    Clips

    (4 min 44 sec) Neil Shubin brought the fossil of Tiktaalik to his daughter’s first grade class to see what the students would make of it.

  • Dante's Story

    Dante's Story

    Clips

    (6 min 6 sec) Dante is a 10-year-old boy born with hemimegalencephaly—an enlargement of half his brain.

  • DNA Sequence Technology Improves Cancer Treatment

    DNA Sequence Technology Improves Cancer Treatment

    Clips

    (2 min 6 sec) Dr. Charles Sawyers discusses how the identification of most cancer genes could transform cancer into a chronic disease.

  • The Search for Genetic Mutations that Cause Autism

    The Search for Genetic Mutations that Cause Autism

    Clips

    (2 min 5 sec) Dr. Christopher Walsh discusses how genomic science has made enormous contributions to our understanding of the genetic causes of autism.

  • Meet Dante—A Young Boy with Hemimegalencephaly

    Meet Dante—A Young Boy with Hemimegalencephaly

    Clips

    (2 min 33 sec) Dante is a healthy 10-year-old boy who has had half his cerebral cortex surgically removed to treat his seizures.

  • CLARITY—Cutting Edge Microscopy for Brain Imaging

    CLARITY—Cutting Edge Microscopy for Brain Imaging

    Clips

    (1 min 17 sec) A new technique for making the brain transparent provides extremely detailed views of groups of neurons.

  • Meet Charles Sawyers

    Meet Charles Sawyers

    Clips

    (2 min 27 sec) Dr. Sawyers is an HHMI investigator who has contributed to the development of drugs that target leukemia and prostate cancer. 

  • Meet Chris Walsh

    Meet Chris Walsh

    Clips

    (2 min 3 sec) Dr. Walsh is an HHMI investigator whose research focuses on understanding the genes involved in the development and function of the human brain.

  • The Principle of Isostasy

    The Principle of Isostasy

    Clips

    (2 min 39 sec) Continents rose in elevation after ice sheets from the last ice age retreated. This suggested that the underlying mantle is pliable.

  • Stratigraphic Principles

    Stratigraphic Principles

    Clips

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

  • Rift Valleys of Africa and Plate Tectonics

    Rift Valleys of Africa and Plate Tectonics

    Clips

    (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.

  • The Mosquito Life Cycle

    The Mosquito Life Cycle

    Clips

    (1 min 7 sec) To prevent mosquitoes from spreading diseases, it's essential to understand their life cycle.

  • Leading-Edge Bioinformatics

    Leading-Edge Bioinformatics

    Clips

    (6 min 36 sec) Peter Skewes-Cox, and Dr. Graham Ruby, both in the DeRisi lab, explain state-of-the-art DNA sequencing and bioinformatic technologies.

  • Bee Colony Collapse Disorder

    Bee Colony Collapse Disorder

    Clips

    (7 min 46 sec) Charles Runckel, a graduate student in the DeRisi lab, uses the Virochip to examine the mystery of bee colony collapse disorder.

  • Cone Snails: Versatile Hunters

    Cone Snails: Versatile Hunters

    Clips

    (13 min 39 sec) Dr. Jason Biggs of the University of Guam Marine Laboratory discusses the anatomy of cone snails and introduces us to a variety of cone snail species with different tactics to hunt and capture their prey.

  • Demonstration: Glowing bacteria in a flask

    Demonstration: Glowing bacteria in a flask

    Clips

    (52 sec) Dr. Bassler demonstrates the bioluminescence of a culture of Vibrio harveyi.

  • Conus catus strikes a fish

    Conus catus strikes a fish

    Clips

    (1 min 11 sec) A fish-hunting cone snail strikes its prey with a venomous harpoon, causes paralysis, and eats it.

  • Bobtail squid swimming and burrowing

    Bobtail squid swimming and burrowing

    Clips

    (1 min 3 sec) The bobtail squid swims during the night to hunt. During the day, it burrows to hide from predators.

  • Demo: SHH concentration and eye position

    Demo: SHH concentration and eye position

    Clips

    (1 min 22 sec) A reduction in the level of sonic hedgehog (SHH) gene expression can lead to cyclopia.

  • Mice navigate a Barnes maze to test spatial learning

    Mice navigate a Barnes maze to test spatial learning

    Clips

    (2 min 15 sec) Mice can be trained to use spatial cues to navigate a maze that tests their ability to remember specific locations.

  • Muscle activity during walking and hopping

    Muscle activity during walking and hopping

    Clips

    (45 sec) Electrical activity recorded from the leg muscles reveals different patterns of activation during different gaits.

  • Growth cones in action

    Growth cones in action

    Clips

    (34 sec) The growth cones of two neurons sense and interact with one another.

  • Computer analysis of human movement

    Computer analysis of human movement

    Clips

    (56 sec) Dr. Jessell's leg muscle activation patterns are recorded during walking.

  • Demo: Electrical measurement of muscle activity

    Demo: Electrical measurement of muscle activity

    Clips

    (2 min 10 sec) A live recording of muscle activity from Dr. Jessell's biceps and triceps muscles.

  • Aplysia's gill-withdrawal reflex and sensitization

    Aplysia's gill-withdrawal reflex and sensitization

    Clips

    (1 min 25 sec) A touch to the Aplysia's siphon causes a gill withdrawal, a simple reflex for studying memory.

  • CTL killing a target cell

    CTL killing a target cell

    Clips

    (1 min 17 sec) Video microscopy of a cytotoxic T lymphocyte in action.

  • Somatic Cell Nuclear Transfer Video

    Somatic Cell Nuclear Transfer Video

    Clips

    (2 min) Somatic cell nuclear transfer (SCNT) is performed looking through a microscope and using small glass pipettes to handle human eggs and to remove and transfer nuclei from one cell to another.

  • Stickleback Environment

    Stickleback Environment

    Clips

    (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.

  • Fruit Fly Courtship

    Fruit Fly Courtship

    Clips

    (55 sec) Male courtship dances in two fruit fly species show that the wing spots play a prominent role.

  • Dog Breeding

    Dog Breeding

    Clips

    (1 min 53 sec) The many forms of dogs that exist today were all created through selective breeding from the dog's ancestor, the wolf. In a span of less than 10,000 years, breeders have changed traits and body shapes of dogs by artificial selection-for example, emphasizing different aspects of hunting and herding behavior.

  • Breeding Corn from Teosinte

    Breeding Corn from Teosinte

    Clips

    (52 sec) Corn was originally bred from the teosinte plant by native Mexican farmers. The morphologies of modern-day corn and teosinte plants are compared to illustrate how artificial selection can bring about dramatic changes in plants.

  • Fossil Record of Stickleback Evolution

    Fossil Record of Stickleback Evolution

    Clips

    (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.

  • Pima Indians

    Pima Indians

    Clips

    (2 min 36 sec) A clip about the Pima Indian tribe and how environment has affected them.

  • Learning from Mice: The Science of Transgenic Technology

    Learning from Mice: The Science of Transgenic Technology

    Clips

    (11 min 8 sec) What do humans, flies, and worms have in common? More than you might think. See how transgenic organisms are engineered, and how they enable researchers to study genetic diseases.

  • Clonal vs Sexual Reproduction

    Clonal vs Sexual Reproduction

    Clips

    (8 min 56 sec) What does a stack of fruits and vegetables have to do with the theoretical advantages of sexual reproduction? Find out in this demonstration with student audience members and Dr. David Page.

  • Size Analogies of Bacteria and Viruses

    Size Analogies of Bacteria and Viruses

    Clips

    (1 min 44 sec) Dr. Finlay and Dr. Richard Ganem use physical analogies to compare the size of bacteria and viruses relative to a standard mammalian cell.

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