So, what`s going on? Well, it turns out that there is a lot of difference between Montreal and Paris. The Montreal Protocol, which was finalized in 1987, is a comprehensive agreement to protect the stratospheric ozone layer by gradually reducing the production and consumption of ozone-depleting substances (SDGs). The Montreal Protocol has proven to be innovative and successful and is the first treaty to be universally ratified by all countries of the world. With this global participation, the Montreal Protocol stimulated global investments in alternative technologies, many of which were developed by U.S. companies, and put the ozone layer at risk on a repair path. Given all these factors, and more, the Montreal Protocol is considered one of the most successful environmental agreements of all time. What the parties to the protocol have accomplished since 1987 is unprecedented and remains an inspiring example of what international cooperation can achieve in its best form. The treaties are also remarkable in the unique utility of global action, with only 14 years signed between a fundamental scientific discovery (1973) and the international agreement (1985 and 1987). So if ozone suddenly disappeared or was attacked by harmful chemicals – dare we say, supplied by man – we would be in trouble. This is exactly what two chemists from the University of California, Irvine, showed in 1974. The Montreal Protocol on Ozone Depleting Substances is the pioneering multilateral environmental agreement that governs the production and consumption of nearly 100 man-made chemicals, known as ozone-depleting substances (SDGs). When these chemicals are released into the atmosphere, they harm the stratospheric ozone layer, the earth`s protective shield that protects humans and the environment from the sun`s harmful rays. The protocol adopted on 15 September 1987 is to date the only UN treaty ever ratified in all the countries of the world – the 197 member states of the United Nations.
The original Montreal Agreement (1987) required developed countries to begin phasing out chlorofluorocarbons (CFCs) in 1993 and to reduce consumption by 50% from 1986 by 1998.