Th (45)

Ozone by Sergio G

By Sergio Guerrero1

  • Agreement on product cut

    Agreement on product cut
    Countries agree to phase out HCFCs by 2030 and CFC phase out to be changed to 1996.

  • CFCs created

    CFCs created
    CFCs created my companies and advertised as harmless.

  • Countries unable to phase out.

    Countries unable to phase out.
    Russian federation unable to phase out CFCs on time, GEF offers to help.

  • Ozone and CFCs study

    Ozone and CFCs study
    United Nations Environment programme in 1977 after link of ozone depletion and CFCs discovered.

  • Phase out methyl bromide

    Phase out methyl bromide
    Countries agree to phase out methyl bromide by 2015.

  • Ban on CFCs

    Ban on CFCs
    USA, Canada, Sweden, and Norway ban CFCs

  • Government protest

    Government protest
    UNEP starts government negotiational protest to protect ozone.

  • CFC use increases

    CFC use increases
    Companies demand evidence of Ozone and CFCs, use increases.

  • Governments find evidence

    Governments find evidence
    Governments agree to work together, find evidence of CFCs depleting of ozone.

  • Severe depletion in Antarctica

    Severe depletion in Antarctica
    British Antarctic team finds severe depletion in ozone layer.

  • Cut in CFC production

    Cut in CFC production
    46 governments agree to 50% cut in production of CFCs by 2000

  • Ban bromochloromethane

    Ban bromochloromethane
    Countries agree to ban production of bromochloromethane, new ozone depleting chemical