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  1. Readers weigh in on the ‘USS Jellyfish,’ the new age of videocalling and more

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  2. How test tube babies went mainstream

    Editor in chief Nancy Shute discusses the history of assisted reproductive technologies, which has made parenthood possible for millions of people.

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  3. Animals

    Mouse sperm thrived despite six years of exposure to space radiation

    A space station experiment suggests future deep-space explorers don’t need to worry about passing the effects of space radiation on to their children.

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  4. Health & Medicine

    Here’s what you should know about COVID-19 vaccine booster shots

    No one knows if coronavirus booster shots will be necessary.