The ozone layer is a protective layer of gas in the Earth’s stratosphere that shields life from the Sun’s harmful ultraviolet (UV) radiation. Over the past decades, human activities have caused significant depletion of this layer, creating “holes” in the ozone, particularly over the polar regions. The main culprits are chemicals such as chlorofluorocarbons (CFCs), halons, and other ozone-depleting substances used in refrigerants, aerosols, and industrial processes. When these chemicals reach the stratosphere, they break down ozone molecules, reducing the layer’s ability to absorb UV radiation., Ozone layer depletion leads to serious consequences for humans, animals, and the environment. Increased UV exposure can cause skin cancer, cataracts, and immune system weakening in humans. It also harms marine ecosystems, affecting plankton and disrupting the food chain, and damages crops and forests. While global agreements like the Montreal Protocol have helped reduce the production of harmful substances, the ozone layer remains fragile and requires continued international attention and action. Addressing this problem is essential for safeguarding life on Earth and maintaining ecological balance.