By Susan Cunningham
Denmark won allies last week in its drive to accelerate the phase-out of two chemicals that destroy the ozone layer, hydrochloro-fluorocarbons (HCFCs) and the pesticide methyl bromide.
Twenty-two nations, including the entire European Union, pledged here to phase out their production and consumption of HCFCs by the year 2015, 15 years ahead of the present schedule. They had convened for the annual meeting of 123 signatories to the Montreal Protocol. The 22 nations also promised to limit their HCFC use “to absolutely necessary applications” in the run-up to 2015.
HCFCs were introduced as substitutes for the more destructive chlorofluorocarbons (CFCs), which are used as refrigerants and in the manufacture of insulating foams. Beginning in 1987, CFCs were the original target of international efforts–codified under various Montreal Protocol agreements–to protect the atmospheric ozone layer.