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The ozone layer is a thin layer of ozone in the
atmosphere, 10 - 50 kilometres above the earth. -
Wonder gas CFCs were invented in 1928
for commercial applications. -
In 1977, the United Nations Environment Programme (UNEP)
sets up a co-ordinating committee to study the ozone layer. -
In 1978, the United States of America, Canada,
Sweden and Norway ban the use of CFCs in aerosols. -
In 1981, UNEP starts inter-governmental negotiations to protect the ozone layer.
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After 1982, in the absence of other moves,
the consumption of CFCs increases again. Industry demands proof of ozone depletion due to CFCs. -
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.“The British Antarctic Team discovers severe thinning in the ozone The British Antarctic Team discovers severe thinning in the ozone layer over Antarctica - the ozone hole. -
In 1987, 46 governments agree to a fifty per cent cut in the
production and consumption of CFCs by the year 2000. a freeze
in production and consumption of halons by 1992; further
controls linked to assessments by experts. Manufactures of CFC's want money to change what the cans are made out of. -
After telling the world of how CFC; deplete the Ozone, the UNEP Assessment Panel of experts reports the need for tougher controls.
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UNEP Assessment Panels recommend that more substances
(HCFCs, methyl bromide) are controlled and that the phase out of CFCs is advanced. -
Halons are phased out by industrialized countries. UNEP Assess-
ment Panels recommend tougher controls on methyl bromide. -
Some countries, the Russian Federation and others, report an
inability to phase out CFCs by 1996 due to their internal problems. -
Industrialized countries agree to phase out methyl bromide by
2005. Developing countries will phase out the same by 2015. -
They started adding licences to end the distribution of Aerosols, Fasing out Aerosols in countries where their used everywhere, and adding more money to make more eco-friendly Aerosols.