This interview is with Fiona Weir who is talking to me today about the Ozone layer campaign which led to phase out of most products that deplete the ozone, such as aerosols and air conditioning coolants with chlorofluorocarbons.

Scientists first discovered a hole in the ozone layer hole in 1985 and attributed its appearance to the use of CFCs. Friends of the Earth along with other organisations quickly mobilised to get an international agreement which saw CFCs being phased out. It is widely regarded as one of the most successful environmental actions ever and has been credited with the observed shrinkage of the hole in the decades that followed.

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