The ozone hole was first discovered in 1985 by British Antarctic Survey scientists Joe Farman, Brian Gardiner, and Jonathan Shanklin.

The Montreal Protocol on Substances that Deplete the Ozone Layer is an international agreement designed to protect the ozone layer by phasing out the production and consumption of ozone-depleting substances.

Chlorofluorocarbons (CFCs) are the main human-made chemicals that contribute to ozone depletion. They were widely used in refrigerators, air conditioners, and aerosol sprays until the Montreal Protocol was signed.

Ozone depletion can lead to increased risk of skin cancer, cataracts, and immune system suppression.

The ozone hole is currently recovering due to the success of the Montreal Protocol. However, it is still a serious environmental issue and it will take many years for the ozone layer to fully recover.

Phasing out ozone-depleting substances can be challenging due to cost, availability of alternatives, and lack of political will.

The Montreal Protocol has had a number of positive impacts, including reduced risk of skin cancer, improved air quality, and protection of ecosystems.

The future of ozone depletion is uncertain. It depends on a number of factors, including the continued implementation of the Montreal Protocol and the development of new technologies to replace ozone-depleting substances.

Individuals can help protect the ozone layer by reducing their use of products that contain ozone-depleting substances, recycling and disposing of ozone-depleting substances properly, and supporting policies that promote the phase-out of ozone-depleting substances.

The United Nations Environment Programme (UNEP) plays a key role in addressing ozone depletion by coordinating international efforts to protect the ozone layer, providing technical assistance to developing countries, and monitoring the implementation of the Montreal Protocol.

The World Meteorological Organization (WMO) plays a key role in addressing ozone depletion by monitoring the state of the ozone layer, providing scientific assessments of ozone depletion, and coordinating international research on ozone depletion.

The scientific community plays a key role in addressing ozone depletion by conducting research on ozone depletion, providing scientific advice to policymakers, and raising public awareness about ozone depletion.

The media plays a key role in addressing ozone depletion by reporting on ozone depletion, raising public awareness about ozone depletion, and holding policymakers accountable for their actions on ozone depletion.

The public plays a key role in addressing ozone depletion by demanding action from policymakers, changing its consumption habits, and supporting organizations that are working to protect the ozone layer.