Extras

    Video thumbnail: NOVA Does the Flu Shot Work?

    NOVA

    Does the Flu Shot Work?

    The flu vaccine changes from year to year and its efficacy varies. Here’s why.

    Does the Flu Shot Work?

    Video thumbnail: NOVA Predicting Landslides

    NOVA

    Predicting Landslides

    How might science help avoid tragic deaths caused by landslides?

    Predicting Landslides

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