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    • Scientist looking through an agar plate with bacteria growing.
    Rights: Gary Meek, Georgia Institute of Technology. Published 2 April 2013, Updated 2 April 2013 Size: 1.1 MB Referencing Hub media

    Georgia Institute of Technology graduate student Natasha DeLeon-Rodriguez shows an agar plate on which bacteria taken from tropospheric air samples are growing.

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      Life in the upper troposphere

      Sci-fi writers from Arthur Conan Doyle to Ray Bradbury have long speculated about the invisible lighter-than-air creatures that must surely inhabit the realms above the ground. After all, just ...

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