evidence: Yes and no. The ozone hole is basically a human-caused hole in the ozone layer above the South Pole during the Southern Hemisphere’s spring. The ozone layer, which lies high in the atmosphere, shields us from harmful ultraviolet (UV) rays that come from the Sun. Human activities effectively punched a hole in it, through the use of gases like chlorofluorocarbons (CFCs) in spray cans and refrigerants, which break down ozone molecules in the upper atmosphere. [...] Since the 1990s, surface UV levels have been relatively stable, and ozone hole recovery has contributed to less surface UV than expected. However, while HFCs have helped the ozone layer recover, they still cause some harm, resulting in the area reforming more slowly than once thought. Ozone holes still form regularly in Antarctica. [...] In summary, negative changes in the ozone layer are being offset by positive changes in human behavior, allowing the ozone layer to reform. The role the ozone hole itself plays in global warming and the resulting climate change is small compared to the impacts coming from human activities.