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  1. Life

    Fossils suggest early primates lived in a once-swampy Arctic

    Teeth and jawbones found on Ellesmere Island, Canada, suggest that two early primate species migrated there 52 million years ago.

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  2. Materials Science

    These shape-shifting devices melt and re-form thanks to magnetic fields

    Miniature machines made of gallium embedded with magnetic particles can switch between solid and liquid states.

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  3. Health & Medicine

    Procrastination may harm your health. Here’s what you can do

    Scientists have tied procrastination to mental and physical health problems. But don't panic if you haven't started your New Year's resolutions yet.

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  4. Astronomy

    Lots of Tatooine-like planets around binary stars may be habitable

    A new simulation suggests that planets orbiting a pair of stars may be plentiful, and many of those worlds could be suitable for life.

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  5. Paleontology

    A bird with a T. rex head may help reveal how dinosaurs became birds

    The 120-million-year-old Cratonavis zhui, newly discovered in China, had a head like a theropod and body like a modern bird.

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  6. Animals

    Some young sea spiders can regrow their rear ends

    Juvenile sea spiders can regenerate nearly all of their bottom halves — including muscles and the anus — or make do without them.

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  7. Earth

    Earth’s inner core may be reversing its rotation

    In the past 13 years, the rotation of the planet’s solid inner core may have temporarily stopped and then started to reverse direction.

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  8. Animals

    A rare rabbit plays an important ecological role by spreading seeds

    Rabbits aren’t thought of as seed dispersers, but the Amami rabbit of Japan has now been recorded munching on a plant’s seeds and pooping them out.

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  9. Readers discuss jazz music, the next generation of astronauts and more

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  10. Yes, we can meet the climate change challenge

    Editor in chief Nancy Shute discusses the first installment of our new climate change solutions series.

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  11. Environment

    Recycling rare earth elements is hard. Science is trying to make it easier

    As demand grows, scientists are inventing new — and greener — ways to recycle rare earth elements.

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  12. Environment

    Rare earth elements could be pulled from coal waste

    The scheme would provide valuable rare earth metals and help clean up coal mining’s dirty legacy.

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