chlorofluorocarbons (CFCs)

Chlorofluorocarbons (CFCs) are man-made chemicals that were commonly used in refrigeration, air conditioning, and aerosol sprays. They are effective at cooling but are a significant environmental concern because they damage the ozone layer, which protects Earth from harmful ultraviolet (UV) radiation. When CFCs escape into the atmosphere, they eventually reach the stratosphere, where they break down and release chlorine atoms that deplete ozone. Due to their harmful effects, many countries have phased out CFCs under international agreements like the Montreal Protocol, promoting safer alternatives to protect the environment and public health.