Among the substances that destroy the ozone layer which have been phased out, CFCs are probably the best known.
True, they persist in the atmosphere for decades and were present in everyday objects such as refrigerators. Less famous, methyl bromide is however equally harmful product for atmospheric ozone: this pesticide was totally disappear in 2005 industrialized countries, according to the schedule set by the Montreal Protocol.
Or the United States asking for new exemptions to the 2006 year to still use 6.500 tonnes of methyl bromide.
US demand will be discussed at the 17ème Meeting of the Parties to the Montreal Protocol, held in Dakar, Senegal from the 7 16 December. The protocol was adopted in 1987, organizes the withdrawal of substances that deplete the atmospheric ozone layer, '' shield '' which protects the Earth from ultraviolet radiation.