Ozone Layer

By bellaadelgado

  • Wonder Gas

    “Wonder gas” CFCs were invented in 1928
    for commercial applications.

  • 1977

    “In 1977, the United Nations Environment Programme (UNEP)
    sets up a co-ordinating committee to study the ozone layer.”
  • Period: to

    CFCs

    “In 1978, the United States of America, Canada,
    Sweden and Norway ban the use of CFCs in aerosols.”
  • Period: to

    Ozone Layer

    “In 1981, UNEP starts inter-governmental negotiations to protect the ozone layer.”
  • Period: to

    CFCs

    “After 1982, in the absence of other moves,
    the consumption of CFCs increases again. Industry demands proof of ozone depletion due to CFCs.”
  • Period: to

    Government agree to study

    “Governments agree to study, exchange information and
    protect the ozone layer - through the Vienna Convention for the
    Protection of the Ozone Layer (1985). Scientists continue to find proof of ozone depletion.