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July 30, 2021

A look at how viruses—from SARS-CoV-2 to HIV—persist in the body and how this can provide new clues into understanding immunity. Plus, how athletes are attempting to avoid infection—and coping with extreme heat—in Tokyo. And the benefit of fungi that live in our gut microbiome.

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Tracking Time Through Shifting Sands

What the world’s beaches can teach us about Earth’s history.

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The Origin Of The Word ‘Vaccine’

This world-changing tool of immunization got its name from a cow virus.

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