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  • Identifying the Key Genes for Regeneration

    Identifying the Key Genes for Regeneration

    Scientists at Work

    (9 min 55 sec) Planarians have an amazing ability to regenerate lost tissues. In this video, scientists knock out two different genes in planaria to start to understand how the process works—and they generate animals with two heads and two tails!

  • 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.

  • Think Like a Scientist: Natural Selection in an Outbreak

    Think Like a Scientist: Natural Selection in an Outbreak

    Scientists at Work

    (7 min 29 sec) This video brings us to the front lines of the 2013–2015 Ebola outbreak in west Africa and explains how scientists monitored the evolution of the virus by analyzing its genome.

  • Virus Hunter: Monitoring Nipah Virus in Bat Populations

    Virus Hunter: Monitoring Nipah Virus in Bat Populations

    Scientists at Work

    (9 min 1 sec) In this video we follow scientists working in Bangladesh as they test fruit bat populations to determine whether they are infected with Nipah virus—a potentially deadly virus when passed on to humans.

  • The Origin of Flight: What Use Is Half a Wing?

    The Origin of Flight: What Use Is Half a Wing?

    Scientists at Work

    (8 min 16 sec) Biologist Ken Dial's study of how young birds use their developing wings sheds light on the evolution of flight in birds.

  • 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.

  • Dante's Story

    Dante's Story

    Clip

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

  • The Search for Genetic Mutations that Cause Autism

    The Search for Genetic Mutations that Cause Autism

    Clip

    (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

    Clip

    (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

    Clip

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

  • Genomic Medicine, Autism, and Cancer

    Genomic Medicine, Autism, and Cancer

    Lecture

    (37 min 26 sec) A student discussion with the lecturers of the 2013 Holiday Lectures on Science.

  • From Cancer Genomics to Cancer Drugs

    From Cancer Genomics to Cancer Drugs

    Lecture

    (58 min 46 sec) Genetic data from a large number of tumor types reveal commonly mutated genes and uncover connections between different types of cancer.

  • Decoding the Autism Puzzle

    Decoding the Autism Puzzle

    Lecture

    (58 min 5 sec) Over the past decade, the application of advanced DNA sequencing techniques has greatly increased our understanding of the genetic basis of autism.

  • Sizing Up the Brain Gene By Gene

    Sizing Up the Brain Gene By Gene

    Lecture

    (59 min 32 sec) Recent advances in DNA sequencing technology have led to a better understanding of the many genes that play a role in brain development.

  • Meet Chris Walsh

    Meet Chris Walsh

    Clip

    (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.

  • Medicine in the Genomic Era

    Medicine in the Genomic Era

    Lecture

    In the 2013 Holiday Lectures on Science, leading medical researchers explain how advances in genomics are revolutionizing their work, leading to a better understanding of disease and to improved treatments.

  • Genetics of Bitter Taste Perception

    Genetics of Bitter Taste Perception

    Lecture

    (50 min 39 sec) How humans perceive bitter taste, and the evolution of taste perception.

  • 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.

  • 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.

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