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  1. Readers weigh in on brain technology, black holes and more

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  2. Living with pandemic uncertainty, Year 2

    Editor in chief Nancy Shute looks back at a year of COVID-19 coverage and living with the pandemic.

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  3. Physics

    Can room-temperature superconductors work without extreme pressure?

    The next generation of materials that conduct electricity with no resistance could shrug off the need for high pressure and low temperatures.

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  4. Space

    ‘Oumuamua may be a chip knocked off an icy, Pluto-like exoplanet

    If the first interstellar visitor were a shard of nitrogen ice, it would explain some of its unusual behavior when it passed through our solar system.

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  5. Genetics

    ‘The Code Breaker’ tells the story of CRISPR pioneer Jennifer Doudna

    In his latest book, Walter Isaacson chronicles the discovery of CRISPR and delves into the ethics of gene editing.

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  6. Health & Medicine

    AstraZeneca’s COVID-19 vaccine isn’t tied to blood clots, experts say

    Multiple countries suspended use of AstraZeneca’s COVID-19 vaccine because of concerns about blood clots, but health authorities say the shot is safe.

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  7. Paleontology

    An ancient shark’s weird fins helped it glide like a manta ray

    Nicknamed eagle shark, the newly discovered ancient creature achieved underwater flight 30 million years before the first rays.

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  8. Animals

    Two bonobos adopted infants outside their group, marking a first for great apes

    Female bonobos in a reserve in the Congo took care of orphaned infants — feeding, carrying and cuddling them — for at least one year.

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  9. Health & Medicine

    We still don’t know for sure where the coronavirus came from. Here’s why

    A year into the pandemic, we know the virus probably came from bats, but how and why it leaped to humans are still unknown.

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  10. Health & Medicine

    Coronavirus reinfections appear rare, especially in people younger than 65

    Previous infections provide 80 percent protection in younger people and 47 percent in those over 65. Vaccines might help boost immunity further.

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  11. Health & Medicine

    50 years ago, researchers treated chronic pain with electricity

    In 1971, doctors eased chronic pain by sending electrical impulses to the spinal cord. Fifty years later, improved techniques help paralyzed people walk.

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  12. Life

    Two new books investigate why it’s so hard to define life

    For centuries, scientists have struggled to define what it means to be alive. ‘What Is Life?’ and ‘Life’s Edge’ explore the question.

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