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  1. Astronomy

    200 years ago, the Milky Way’s central black hole briefly awoke

    The black hole is thought to be mostly quiet and dim. Now, glowing cosmic clouds have revealed the behemoth’s last flare.

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  2. Quantum Physics

    Quantum computers could break the internet. Here’s how to save it

    Today's encryption schemes will be vulnerable to future quantum computers, but new algorithms and a quantum internet could help.

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  3. Life

    Flowers pollinated by honeybees make lower-quality seeds

    Honeybees are one of the most common pollinators. But their flower-visiting habits make it harder for some plants to produce good seeds.

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  4. Paleontology

    Megalodon sharks may have become megapredators by running hot

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