Chromium-6 from medical implants not harmful to health Chromium-6 from medical implants, such as hip or knee implants, does not result in severe health damage.
HFC greenhouse gases accumulate in refrigerators and air conditioners Hydrofluorocarbons (HFCs) are potent greenhouse gases used in refrigerators and air conditioners and are released primarily at the end of the life-span of these products.