Whatever Happened to the Hole in the Ozone Layer?

In the 1980s, scientists discovered a big hole in the ozone layer. The ozone layer is important because it protects us from harmful ultraviolet (UV) radiation from the Sun. Two chemists found out that chemicals called CFCs were destroying the ozone layer. CFCs were used in many everyday items like refrigerators and spray cans. People all over the world worked together to solve this problem. They signed an agreement called the Montreal Protocol to stop using CFCs. This helped the ozone layer to start healing. Scientists predict that the hole in the ozone layer will disappear by 2070.