Ozone layer

The UN describes the ozone layer as a thin shield of gas (O₃) in the Earth’s atmosphere that protects the planet, absorbing the sun’s ultraviolet rays and helping preserve living organisms. Because of this function, the layer is also described as “the Earth's natural sunscreen, filtering out harmful ultraviolet (UV) rays from the sun.” The ozone layer is, however, not immune to harmful human activities. Human activity is known to deplete the ozone layer. A collection of human-made greenhouse gases known as ozonedepleting substances (ODSs), including chlorofluorocarbons that can be found in everyday products such as air conditioners, refrigerators, and aerosol cans, are some of the contributing factors. ODSs are also potent greenhouse gases that contribute to climate change with direct and indirect impact to humans and the planet.