Residents of Houston, Texas – our nation’s fourth largest city – have long been burdened with a serious air pollution problem. Between 2013 and 2015, the Houston area reported unhealthy levels of ground-level ozone (“smog”) on an average of over 23 days each year. Last year, the American Lung Association ranked Houston as the sixteenth-most polluted city in the nation for year-round particle pollution. … [Read more...]