NASA sees first direct proof of ozone hole recovery due to chemicals ban.

Measurements show that the decline in chlorine, resulting from an international ban on chlorine-containing manmade chemicals called chlorofluorocarbons (CFCs), has resulted in about 20 percent less ozone depletion during the Antarctic winter than there was in 2005—the first year that measurements of chlorine and ozone during the Antarctic winter were made by NASA’s Aura satellite. Read more: https://go.nasa.gov/2CVqpZ2



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