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Showing 1-20 of 112 Resources
  • Cystic Fibrosis Mechanism and Treatment

    Cystic Fibrosis Mechanism and Treatment

    Animation

    (2 min 31 sec) Mutations in the CFTR gene, which encodes a transmembrane ion channel, cause mucus buildup in the airways of patients with cystic fibrosis.

  • Termite Activity Enhances Ecosystem Productivity and Stability

    Termite Activity Enhances Ecosystem Productivity and Stability

    Animation

    Termite activity increases soil moisture and nutrient accumulation, strengthening African savanna ecosystems.

  • Gorongosa's Water Cycle

    Gorongosa's Water Cycle

    Animation

    (2 min 15 sec) This animation illustrates the main stages of the water cycle in the setting of Gorongosa National Park.

  • How We Get Our Skin Color

    How We Get Our Skin Color

    Animation

    (3 min 32 sec) This engaging animation shows how human skin cells produce the pigment melanin, which gives skin its color. 

  • Seeing Single Molecules Move

    Seeing Single Molecules Move

    Animation

    (1 min 40 sec) Single-molecule analysis using super-resolution microscopes reveals that transcription factors are not usually found bound to their binding sites on DNA.

  • Coral Bleaching

    Coral Bleaching

    Animation

    (3 min 48 sec) Zoom into a coral reef and discover photosynthetic algae inside the coral’s cells. Reef-building corals rely on these symbionts for their survival.

  • Cancer and Cell Fate in the Intestinal Epithelium

    Cancer and Cell Fate in the Intestinal Epithelium

    Animation

    (2 min 17 sec) Disrupting the normal processes of differentiation and maturation of the intestinal epithelial cells can lead to cancer. Also available in Spanish.

  • Autism and the Structure and Function of Synapses

    Autism and the Structure and Function of Synapses

    Animation

    (2 min 3 sec) Genes associated with autism affect the structure and function of neuronal synapses.

  • Development of the Cerebral Cortex

    Development of the Cerebral Cortex

    Animation

    (1 min 43 sec) Most of the neurons of the cerebral cortex arise from progenitor cells that undergo repeated cell division.

  • Anole Lizards: An Example of Speciation

    Anole Lizards: An Example of Speciation

    Animation

    (2 min 38 sec) This animation features the anole lizards as an example of how a single species can split and multiply into many different species with distinct traits.

  • Gleevec-Resistant Form of Kinase BCR-ABL

    Gleevec-Resistant Form of Kinase BCR-ABL

    Animation

    (2 min 14 sec) Mutations in the BCR-ABL gene can cause resistance to Gleevec, but another drug, dasatinib, can be used instead.

  • Gleevec Inhibits Cancer-Causing Kinase BCR-ABL

    Gleevec Inhibits Cancer-Causing Kinase BCR-ABL

    Animation

    (3 min 31 sec) The drug Gleevec binds to and inactivates BCR-ABL, a mutant kinase that causes chronic myeloid leukemia. 

  • Malaria: Mosquito Host

    Malaria: Mosquito Host

    Animation

    (3 min 59 sec) A mosquito becomes infected with malaria when it sucks the blood from an infected human. Once inside the mosquito, the parasites reproduce in the gut and accumulate in the salivary glands, ready to infect another human host with the next bite.

  • Malaria: Human Host

    Malaria: Human Host

    Animation

    (4 min 18 sec) When a malaria-carrying mosquito bites a human host, the malaria parasite enters the bloodstream, multiplies in the liver cells, and is then released back into the bloodstream, where it infects and destroys red blood cells.

  • Cloning an Army of T Cells for Immune Defense

    Cloning an Army of T Cells for Immune Defense

    Animation

    (4 min 21 sec) View the animation to see how one type of immune cell—the helper T cell—interprets a message presented at the surface of the cell membrane. The message is an antigen, a protein fragment taken from an invading microbe. A series of events unfolds that results in the production of many clones of the helper T cell. These identical T cells can serve as a brigade forming an essential communication network to activate B cells, which make antibodies that will specifically attack the activating antigen.

  • Plate Tectonics

    Plate Tectonics

    Animation

    (1 min 16 sec) Plate tectonics is the unifying theory of Earth science.

  • Dramatic Retreat of Arctic Sea Ice in 2012

    Dramatic Retreat of Arctic Sea Ice in 2012

    Animation

    (26 sec) Arctic sea ice melted on an unprecedented scale in 2012, opening up the fabled Northwest and Northeast passages.

  • The Geologic Carbon Cycle

    The Geologic Carbon Cycle

    Animation

    (6 min 20 sec) CO2 emitted by volcanoes into the atmosphere is removed by a series of chemical reactions related to rock weathering.

  • Greenhouse Effect

    Greenhouse Effect

    Animation

    (2 min 14 sec) Sunlight that warms Earth is re-emitted as infrared radiation, which is absorbed by greenhouse gases and causes further warming.

  • Holmes' Model of Convection

    Holmes' Model of Convection

    Animation

    (45 sec) An early continental drift model proposed that mantle convection can produce continental movement and new plate formation.

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