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Science BBC World, @bbc_ciencia15 September 2014image source, access pointThe work of the Mexican scientist Mario Molina, Nobel Prize in Chemistry in 1995, has been vital for the care of the ozone layer, which protects our planet from ultraviolet rays and at BBC Mundo we recommend you send him your questions.image source, access pointcaption, A United Nations study found signs of recovery in the ozone layer.The scientist identified that chlorofluorocarbons, known as CFCs and found in aerosols, in air conditioning and refrigeration systems, are a threat to the environment.Along with his colleagues Paul J. Crutzen and F. Sherwood Rowland, Molina published…