At 99%, almost the entire world’s population is now breathing air with unhealthy levels of pollutants in it, according to an April 4, 2022, report from the U.N. World Health Organization (WHO). The WHO said fossil fuels are responsible for the majority of the pollutants in the air, resulting in unhealthy levels of fine particulate matter and nitrogen dioxide. When these inhaled pollutants enter the bloodstream through the lungs they ...