The United States, Canada and Mexico have proposed using the Montreal Protocol – an international treaty that limits the use of the ozone-depleting hydrochlorofluorocarbons – to also limit emissions of hydrofluorocarbons (HFCs), potent GHGs. The use of HFCs in refrigerators, air conditioners and other cooling equipment is expected to increase in the coming years. The proposal calls on all countries to reduce their consumption and production of HFCs, with developed countries taking the lead in this effort. Currently, HFCs are one of the six GHGs listed under the Kyoto Protocol. For further information, please see the following article.