1987
the year Mrs Thatcher’s government signed the Montreal Protocol, banning CFC chemicals that were damaging the ozone layer. British researchers played a key role in discovering the hole in the ozone layer, prompting international action.
the year Mrs Thatcher’s government signed the Montreal Protocol, banning CFC chemicals that were damaging the ozone layer. British researchers played a key role in discovering the hole in the ozone layer, prompting international action.