The Montreal Protocol

The depletion of the ozone layer by man-made chemicals was discovered in the mid-1970s. It was once described by the Nobel prize-winning scientist Paul Crutzen as u0093the worst disaster to hit the global environmentu0094. The international response embodied in the Montreal Protocol has been widely regarded as the most successful environmental protection agreement ever reached to date. The Protocol has contributed significantly to reversing a problem with grave implications for life on earth..