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  • 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.

  • DNA Profiling Activity

    DNA Profiling Activity

    Activity

    This multi-part lesson is designed to give students a firm understanding of genetic profiling using short tandem repeats (STRs), which is a process used by forensics labs around the world. 

  • Ebola: Disease Detectives

    Ebola: Disease Detectives

    Activity

    In this classroom activity, students will analyze sequences of Ebola viruses isolated from patients in Sierra Leone during the Ebola outbreak of 2013–2016 to track the virus spread. Also available in Spanish.

  • Middle School

    Middle School

    Collection

    A small selection of our multimedia resources that will enhance your teaching of middle school life and earth science classes. They include engaging, high-quality animation, hands-on activities,...

  • Genetic Mutations and Disease Interactive

    Genetic Mutations and Disease Interactive

    Click & Learn

    This interactive focuses on the roles of germline and somatic cell mutations in human disease. It supports the 2013 Holiday Lectures on Science, Medicine in the Genomic Era.

  • Dating Corn Domestication Using Carbon Isotopes

    Dating Corn Domestication Using Carbon Isotopes

    Data Point

    To study the change in diet as human populations changed lifestyles from hunter-gatherers to agriculturalists, scientists measured carbon isotopes in the collagen tissues of human skeletons from North America.

  • Genetically Modified Mosquitoes

    Genetically Modified Mosquitoes

    Scientists at Work

    (8 min 35 sec) Learn the process by which a line of genetically modified mosquitoes was engineered to reduce populations of Aedes aegypti mosquitoes in the wild.

  • How Animals Use Sound to Communicate

    How Animals Use Sound to Communicate

    Click & Learn

    Using elephants, finches, bats, and moths, as case studies, explore different aspects of how animals use sound to communicate.

  • Patterns of Zoonotic Disease

    Patterns of Zoonotic Disease

    Data Point

    In this study, scientists analyzed previously published data on terrestrial mammal zoonotic host species and the pathogens they carry to search for global patterns of zoonotic disease distribution.

  • Climate Stress and Coastal Food Webs

    Climate Stress and Coastal Food Webs

    Lecture

    (43 min 18 sec) We are in the midst of a major die-off of coastal wetlands – what is to blame?

  • Floods, Droughts, and Food Chains

    Floods, Droughts, and Food Chains

    Lecture

    (44 min 27 sec) How a river's community of herbivores and predators is affected by changes in river flow.

  • Untangling Salt Marsh Food Webs

    Untangling Salt Marsh Food Webs

    Lecture

    (45 min 16 sec) The revelation that salt marshes are controlled by top-down forces of herbivores and other consumers.

  • Trophic Cascades in Rivers

    Trophic Cascades in Rivers

    Lecture

    (44 min 27 sec) How fishes in a river ecosystem play a critical role in forming the aquascape.

  • The Effects of Fungicides on Bumble Bee Colonies

    The Effects of Fungicides on Bumble Bee Colonies

    Scientists at Work

    (6 min 25 sec) Are fungicides safe for bumble bees? Entomologist Shawn Steffan designed an experiment to answer this question.

  • Tagging Bumble Bees to Study Their Movements

    Tagging Bumble Bees to Study Their Movements

    Scientists at Work

    (6 min 1 sec) Graduate student Jeremy Hemberger designs an experiment to study the foraging behavior of bumble bees in different habitats.

  • Mass Extinctions: Lessons from the Past

    Mass Extinctions: Lessons from the Past

    Apps and eBooks

    Examine the history and causes of past mass extinctions, and the evidence for whether we are facing a sixth mass extinction, with this interactive eBook.

  • Ecology of Rivers and Coasts—Food Webs and Human Impacts

    Ecology of Rivers and Coasts—Food Webs and Human Impacts

    Lecture

    Two leading ecologists describe the complex interactions between species and their environment in aquatic ecosystems. 

  • The Great Elephant Census Modeling Activity

    The Great Elephant Census Modeling Activity

    Activity

    In this classroom activity, students will model two types of counting methods, sample counts and total counts, to determine population size. 

  • Selection for Tuskless Elephants

    Selection for Tuskless Elephants

    Scientists at Work

    (6 min 39 sec) Working in Gorongosa National Park, Mozambique, Dr. Joyce Poole and colleagues made a striking observation: many female elephants lack tusks.

  • Understanding Variation

    Understanding Variation

    Activity

    This lesson complements the film The Biology of Skin Color and discusses variation in human skin color and polygenic inheritance. Also available in Spanish.

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