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  1. Materials Science

    Smart windows could block brightness and harness light

    A new type of material pulls double-duty as window shade and solar cell.

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  2. Physics

    50 years on, nuclear fusion still hasn’t delivered clean energy

    In 1968, scientists predicted that the world would soon use nuclear fusion as an energy source.

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  3. Astronomy

    Readers ask about supernovas, dark energy and more

    Readers had questions about a supernova that continuously erupts, the difference between dark energy and dark matter, and more.

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  4. Science & Society

    In play, kids and scientists take big mental leaps

    Acting Editor in Chief Elizabeth Quill explores the science behind children's play and how kids like to mimic the same things adults do.