The reveal of chlorofluorocarbons' (CFCs) potential to destroy the ozone layer in the Earth’s stratosphere was a life-changing discovery. In 1974, atmospheric chemist and 1995 chemistry laureate Mario Molina and his co-laureate Sherwood Rowland demonstrated that CFC gases, freons, have a damaging effect on ozone in the atmosphere. Freons had many uses, including propellants in spray cans and refrigerants in refrigerators. By limiting the use of freons, the depletion of the ozone layer was slowed

You’ve probably heard of the ozone hole. You may have heard of the Montreal Protocol, which has helped limit destruction of Earth’s ozone layer. But…do you know what the ozone hole actually is? We’ve got Ozone 101 with answers to your questions here ⬇️ | NASA Earth

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