Ozone

Ozone depletion

By Devon.Froehle

  • ozone is first measured

    first discovery and measurments of ozone layer recorded
  • chlorofluorocarbons

    chlorofluorocarbons

    chlorofluorocarbons are synthisised by Thomas Midgley Jr.

  • the ozone hole was discovered

    nasa found a hole in our ozone layer

  • no change in ozone hole

    no significant change was found in the ozone layer

  • ozone was measured

    the levels were so low that the scientists thought their equipment was faulty

  • ozone half

    ozone is half the size it was in 1970

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