4 FEB. 2022 · The air we breathe shouldn’t pose a serious threat to our health, but unfortunately the polluted air in the U.S. is doing just that. Air pollution, which contains tiny particles and invisible gases, comes from sources such as power plant and vehicle emissions, fires, and even windblown dust. These particles and gases can cause an array of health problems, including acute and chronic cardiovascular conditions. https://www.heart.org/idc/groups/heart-public/@wcm/@adv/documents/downloadable/ucm_463344.pdf