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  1. Tech

    High-tech solar ‘leaves’ create green fuels from the sun

    Chemists make a liquid alternative to fossil fuels from carbon dioxide, water and the sun. Their trick? They use a new type of artificial leaf.

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  2. Earth

    Canada’s Crawford Lake seems to mark when the Anthropocene began

    Mud at the bottom of this lake holds a record showing how humanity has been changing our planet. But the Anthropocene isn’t an official new epoch yet.

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  3. Tech

    A ‘mini cyclone’ helps detect coronavirus in the air

    A new device can detect from seven to 35 coronavirus particles per liter of air in minutes. That’s close to a PCR test’s sensitivity — but much quicker.

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  4. Tech

    New thermal ‘cloak’ keeps spaces from getting too hot or too cold

     A prototype fabric could help keep cars, buildings and other spaces cooler during heat waves while also reducing greenhouse-gas emissions.

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  5. Chemistry

    Scientists Say: Valence electrons

    These far-out electrons do the hard work when it comes to chemical reactions.

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  6. Tech

    Horses are inspiring this roboticist to build trustworthy robots

    Computer scientist Eakta Jain is looking at human-horse interactions for ideas about how to design robots that work well with people.

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  7. Oceans

    How would a mermaid sound underwater?

    Human ears don’t work well in the water. A mermaid would need marine creature features to talk to and understand her aquatic friends.

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  8. Space

    Ghost particles paint a new picture of the Milky Way

    Scientists tracked neutrinos from space to create a new map of our galaxy. It’s the first image of the Milky Way to be made without light.

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  9. Fossils

    This bizarre ancient predator snagged soft prey

    Scientists are rethinking how this extinct creature used the spiky limbs sticking out of its face to hunt.

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  10. Space

    Scientists Say: Pulsar

    These rapidly spinning dead stars send beams of radio waves into space like cosmic lighthouses.

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  11. Space

    Newfound gravitational waves may be from the biggest black holes in the universe

    Observations of dead stars hint that ripples in spacetime — ripples light-years long — roll through our universe.

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  12. Animals

    Bottlenose dolphin moms baby talk when their calves are near

    Around their babies, bottlenose dolphin moms whistle with higher pitches. It’s similar to human parents speaking in baby talk.

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