Air pollution causes 1 in 8 deaths worldwide and is the largest single environmental health crisis we face. who.int. July 27, 2016.  Launched by the World Health Organization and the Climate & Clean Air Coalition, Breathe Life is a global campaign to raise awareness of air pollution’s impact on our health and our planet, and build a network of citizens, urban and national leaders, and health professionals to leverage change in our communities. Read more.