This month is National Asthma Awareness Month, when we address an illness that affects nearly 25 million Americans and one in every ten children in the United States. Safeguarding the air we breathe and preventing illnesses like asthma attacks is one of my most important jobs as Administrator of the U.S. Environmental Protection Agency. But it is important to me for other reasons as well - before I am Administrator, or an environmentalist, I am a mother of two teenage sons whose health, happiness and future are my and my husband’s top concerns. Over the years, my youngest son has struggled...