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  1. Climate

    Earth’s jet stream helps create the seeds of clouds

    The newly discovered process for making aerosols might also be the most productive.

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  2. Health & Medicine

    Stopping cachexia at its source could reverse wasting from cancer

    The immune protein interleukin-6 helps regulate body weight. Blocking it in the brain could restore appetite and muscle mass, a study in mice hints.

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  3. Climate

    Earth keeps breaking global heat records

    How hot could it get? In the first edition of Science News’ Extreme Climate Update, we look at how high temperatures could soar.

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  4. Health & Medicine

    Getting drugs into the brain is hard.