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  1. Health & Medicine

    Scientists perform the first pig-to-human lung transplant

    The genetically modified lung remained viable for nine days, but the recipient’s immune responses need more research, scientists say.

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  2. Animals

    The mysterious, extinct ‘Fuegian dog’ was actually a semi-tame fox

    Historic European accounts long described the canids as domesticated dogs. A new study suggests that’s probably not true.

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  3. Seeing the world in new ways

    Editor in Chief Nancy Shute examines the exciting potential of the new Vera C. Rubin Observatory and muses on the mesmerizing world of fractals.

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  4. Planetary Science

    NASA’s Webb telescope spotted a new moon orbiting Uranus

    Like Uranus's other 28 moons, the newfound object spotted by JWST will be named after a William Shakespeare or Alexander Pope character.