When CFCs were being used, the ozone was slowly being depleted until large amounts of UV radiation were reaching Earth’s surface. Even when CFCs were banned and steps were taken to reduce them, they remained in the atmosphere and can stay there for many decades. Because of this, there has been no progress in the recovery of the ozone layer for many years. However, studies have been showing that since around 2000, the ozone has been slowly recovering and UV intensity has decreased slightly. Scientists believe that there was a time lag before any effects were shown. Scientists are also saying that even though the ozone is recovering, sun block is still needed because there is still a large amount of UV reaching Earth’s surface. This shows how the steps we are taking to fix our environment are working and should continue to help if more people are willing to do them.
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