The ozone layer hole is slowly recovering

An article from “Science Popularization China” explains that the once muchnoticed ozone hole is now generally on a path to recovery. Although the ozone layer has not yet fully returned to normal levels, the main factors that damage ozone have been effectively brought under control, and the global ozone problem has gradually moved out of its most dangerous stage. The article reviews the important role of the ozone layer: it not only absorbs harmful ultraviolet rays, but also protects the lifesupporting environment on Earth. In the 1970s, researchers discovered that artificial chemicals such as chlorofluorocarbons would release chlorine atoms in the upper atmosphere, which would then continuously destroy ozone molecules. In 1985, the phenomenon of a significant reduction in the ozone layer over Antarctica was confirmed, which then drew great international attention. To address this issue, the Montreal Protocol, signed in 1987, became a key turning point. The agreement prompted countries to gradually restrict and phase out ozonedepleting substances such as chlorofluorocarbons. The article notes that this global collaboration is regarded as one of the successful cases of environmental governance. According to current estimates, the ozone layer in most parts of the world is expected to recover to the 1980 level around 2040, while recovery of the Antarctic ozone hole may come later, but the overall trend is still improving.