Analyzing asthma care in the twenty-first century Asthma is not a new problem, but today the disease is being reshaped by changing ecologies, healthcare systems, medical sciences, and built environments. A global epidemic, asthma (and our efforts to control it) demands an analysis attentive to its complexity, its contextual nature, and the care practices that emerge from both. At once clearly written and theoretically insightful, Breathtaking provides a sweeping ethnographic account of asthma's many dimensions through the lived experiences of people who suffer from disordered breathing, as well as by considering their support networks, from secondary school teachers and coaches, to breathing educators and new smartphone applications designed for asthma control.  Against the backdrop of unbreathable environments, Alison Kenner describes five modes of care that illustrate how asthma is addressed across different sociocultural scales. These modes of care often work in combination, building from or preceding one another. Tensions also exist between them, a point reflected by Kenner's description of the structural conditions and material rhythms that shape everyday breathing, chronic disease, and our surrounding environments. She argues that new modes of distributed, collective care practices are needed to address asthma as a critical public health issue in the time of climate change.