1. How Does a PET Scan Work?

    How Does a PET Scan Work?

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  2. Electric Current Problem

    Electric Current Problem

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  3. Cable bacteria move toward oxygen | Science News

    Cable bacteria move toward oxygen | Science News

  4. Cable bacteria move toward oxygen | Science News

    Cable bacteria move toward oxygen | Science News

  5. Cable bacteria move toward oxygen | Science News

    Cable bacteria move toward oxygen | Science News

  6. Cable bacteria move toward oxygen | Science News

    Cable bacteria move toward oxygen | Science News

  7. See a rare double aurora | Science News

    See a rare double aurora | Science News

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  8. See a rare double aurora | Science News

    See a rare double aurora | Science News

  9. See a rare double aurora | Science News

    See a rare double aurora | Science News

  10. Filament Eruption Creates 'Canyon of Fire' on the Sun [hd video]

    Filament Eruption Creates 'Canyon of Fire' on the Sun [hd video]

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  11. Topological properties do exist at the quantum level

    Topological properties do exist at the quantum level

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