The Montreal Protocol is also trying to phase out and curb more chemicals that are depleting the ozone layer of our atmosphere. Due to all of these enforcements of the Montreal Protocol, and the fact that it was agreed to by so many countries around the world, by 2009 CFC emissions were almost zero. CFCs and HFCs, though they deplete the ozone, are also heat trapping pollutants. The phasing out of these chemicals has led to a greater slowing of climate change.