man running on a field in hazy airNew member Malissa Rodenburg cowrote a new piece in Run about how air quality affects runners. She and her coauthor take a look at what can be in dirty air and what scientists know of how the various gases and particles affect different systems of the body. So what’s a runner to do? Rodenburg leads us through four different recommendations to help runners exercise more safely, avoiding the worst of pollution’s effects while maximizing the sport’s benefits to health. Photo: Baxito via Wikimedia Commons