35. Protecting the Ozone Layer
The UN Environment Programme (UNEP) and the World Meteorological Organization (WMO) have been instrumental in highlighting the damage caused to Earth's ozone layer. As a result of a treaty known as the Montreal Protocol, countries have been phasing out chemicals that cause the depletion of the ozone layer and replacing them with safer alternatives. This will spare millions of people from contracting skin cancer because of exposure to increased ultraviolet radiation.