Why did many governments around the world agree to ban the production and the use of cfc's in the mid 1900s?

Answer 1

The Montreal Protocol on Substances That Deplete the Ozone Layer (a protocol to the Vienna Convention for the Protection of the Ozone Layer) is an international treatydesigned to protect the ozone layer by phasing out the production of a number of substances believed to be responsible for ozone depletion. The treaty was opened for signature on September 16, 1987, and entered into force on January 1, 1989, followed by a first meeting in Helsinki, May 1989. Since then, it has undergone seven revisions, in 1990 (London), 1991 (Nairobi), 1992 (Copenhagen), 1993 (Bangkok), 1995 (Vienna), 1997 (Montreal), and 1999 (Beijing). It is believed that if the international agreement is adhered to, the ozone layer is expected to recover by 2050 . Due to its widespread adoption and implementation it has been hailed as an example of exceptional international cooperation with Kofi Annan quoted as saying that "perhaps the single most successful international agreement to date has been the Montreal Protocol". It has been ratified by 196 states

Answer 2

Many governments agreed to ban the production and use of CFCs in the mid-1900s due to increasing evidence of their harmful impact on the ozone layer. Scientists found that CFCs were contributing to ozone depletion, which in turn could lead to increased UV radiation reaching Earth and posing risks to human health and the environment. This led to the negotiation of international agreements such as the Montreal Protocol to phase out CFCs and protect the ozone layer.