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  1. Readers ask about Mars dust storms, Fermi bubbles and more

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  2. When science doesn’t yet have the answers

    Editor in chief Nancy Shute writes about going back to school in the midst of a pandemic.

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  3. Animals

    Genetically modified mosquitoes have been OK’d for a first U.S. test flight

    After a decade of heated debate, free-flying swarms aimed at shrinking dengue-carrying mosquito populations gets a nod for 2021 in the Florida Keys.

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  4. Astronomy

    Check out the first-ever map of the solar corona’s magnetic field

    Solar physicists watched waves in the sun’s corona to map the whole corona’s magnetic field.