Actually, these substances should no longer get into the atmosphere because they attack the ozone layer, which is vital for humans, and, as greenhouse gases, are partly responsible for global warming. Now an international research team has discovered that the amount of five chlorofluorocarbons (CFCs) increased rapidly between 2010 and 2020. “That’s unusual,” says Stefan Reimann, atmospheric researcher at the Swiss Federal Laboratories for Materials Science and Technology (Empa) and co-author of the study. It is amazing that the substances decreased continuously until 2010, but have increased again since 2010.
Forbidden ozone killers discovered – knowledge
