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Showing 1-20 of 55 Resources
  • How Lizards Find Their Way Home

    How Lizards Find Their Way Home

    Scientists at Work

    (8 min 33 sec) When Dr. Manuel Leal removed lizards from an area in the forest, he noticed an interesting phenomenon: all the lizards seemed to be back the next day. Watch as he sets up an experiment to study how these lizards navigate home. Also available in Spanish.

  • Studying Elephant Communication

    Studying Elephant Communication

    Scientists at Work

    (6 min 43 sec) Elephants can communicate over long distances using low-frequency sounds that travel both in the air and through the ground. Scientists are studying whether elephants can “hear” and interpret these ground vibrations.

  • Holiday Lecture 2004 Update—Jeff Friedman

    Holiday Lecture 2004 Update—Jeff Friedman

    Clip

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

  • Comparing Human and Chimpanzee Tool Use

    Comparing Human and Chimpanzee Tool Use

    Clip

    (29 sec) Chimpanzees are capable of using rocks as tools to crack nuts for eating. But they don't appear to use sharp-edged tools.

  • 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.

  • The Mosquito Life Cycle

    The Mosquito Life Cycle

    Clip

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

  • Q&A on Cone Snails

    Q&A on Cone Snails

    Lecture

    (9 min 18 sec) In this ten-minute Q&A session, Dr. Olivera answers questions on cone snail behavior, venoms, and biodiversity.

  • From Venoms to Drugs

    From Venoms to Drugs

    Lecture

    (58 min 29 sec) Venomous carniverous cone snails are a rich source of molecules for scientific research and potential drug development.

  • Cone Snails: Versatile Hunters

    Cone Snails: Versatile Hunters

    Clip

    (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.

  • Conus tulipa hunts fish by net

    Conus tulipa hunts fish by net

    Clip

    (1 min 7 sec) Unlike a hook-and-line type fish-hunter, a net-hunting cone snail lures its prey into its wide mouth.

  • Conus textile strikes a snail

    Conus textile strikes a snail

    Clip

    (44 sec) A snail-hunting species of cone snail stings its prey repeatedly, inducing the prey to thrash about.

  • Conus striatus strikes a fish

    Conus striatus strikes a fish

    Clip

    (44 sec) A species of fish-hunting cone snail quickly immobilizes its prey and swallows it.

  • Conus imperialis strikes a worm

    Conus imperialis strikes a worm

    Clip

    (31 sec) A worm-hunting cone snail species feeds on fireworms, and is unaffected by the prey's sharp bristles.

  • Conus catus strikes a fish

    Conus catus strikes a fish

    Clip

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

  • Conus bullatus "lightning strike"

    Conus bullatus "lightning strike"

    Clip

    (1 min 10 sec) This species of cone snail immobilizes its prey in a split second with lightning-strike cabal toxins.

  • Bobtail squid swimming and burrowing

    Bobtail squid swimming and burrowing

    Clip

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

  • Memories are Made of This

    Memories are Made of This

    Lecture

    (58 min 29 sec) The cellular and molecular nature of learning and memory, investigated in simpler sea slugs and more-complex mice. Molecular basis of Alzheimer's disease.

  • Plan of Action: How the Spinal Cord Controls Movement

    Plan of Action: How the Spinal Cord Controls Movement

    Lecture

    (58 min 29 sec) Understanding the neural circuits in the spinal cord that control movement.

  • Mapping Memory in the Brain

    Mapping Memory in the Brain

    Lecture

    (58 min 29 sec) The history of localization of function in the brain, and research that led to the understanding of localization of memory.

  • Making Your Mind: Molecules, Motion, and Memory

    Making Your Mind: Molecules, Motion, and Memory

    Lecture

    What is mind? Can molecular biology help us understand mental function?

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