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