Rowland and Molina theory

The Rowland and Molina theory explains how certain chemicals called chlorofluorocarbons (CFCs) damage the Earth's ozone layer. When CFCs are released into the atmosphere, they eventually reach the ozone layer, where sunlight causes them to release chlorine atoms. These chlorine atoms break apart ozone molecules, which protect us from harmful ultraviolet (UV) radiation. This process thins the ozone layer, increasing UV exposure on the Earth's surface, which can harm health and ecosystems. Their work highlighted the environmental impact of human-made chemicals and led to international efforts like the Montreal Protocol to reduce CFC emissions.