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Fluorinated greenhouse gases (F-gases) highly contribute to global warming. Their warming impact is often thousands of times higher than that of carbon dioxide (CO2). Initially introduced to replace ozone-depleting substances (ODS), F-gases were found to trap heat from the sun and thus make the planet warm up faster.  F-gases are human-made. They include hydrofluorocarbons, perfluorocarbons, sulphur hexafluoride and other fluorinated compounds. Hydrofluorocarbons (HFCs) represent around 90% of all F-gases. Although you may not know about these substances, you get into contact with them in one form or another each day.