This book should be essential reading for all who commission, design, manage, and use buildings--indeed anyone who is interested in a healthy environment.--Norman Foster As businesses around the world consider when and how to reopen their doors to fight COVID-19, the Director of Harvard's Healthy Buildings Program and Harvard Business School's leading expert on urban resilience reveal what you can do to harness the power of your offices and homes to protect your health--and boost every aspect of your performance and well-being. Ever feel tired during a meeting? That's because most conference rooms are not bringing in enough fresh air. When that door opens, it literally breathes life back into the room. But there is a lot more acting on your body that you can't feel or see. From our offices and homes to schools, hospitals, and restaurants, the indoor spaces where we work, learn, play, eat, and heal have an outsized impact on our performance and well-being. They affect our creativity, focus, and problem-solving ability and can make us sick--jeopardizing our future and dragging down profits in the process. Charismatic pioneers of the healthy building movement who have paired up to combine the cutting-edge science of Harvard's School of Public Health with the financial know-how of the Harvard Business School, Joseph Allen and John Macomber make a compelling case in this urgently needed book for why every business and home owner should make certain relatively low-cost investments a top priority. Grounded in exposure and risk science and relevant to anyone newly concerned about how their surroundings impact their health, Healthy Buildings can help you evaluate the impact of small, easily controllable environmental fluctuations on your immediate well-being and long-term reproductive and lung health. It shows how our indoor environment can have a dramatic impact on a whole host of higher order cognitive functions--including things like concentration, strategic thinking, troubleshooting, and decision-making. Study after study has found that your performance will dramatically improve if you are working in optimal conditions (with high rates of ventilation, few damaging persistent chemicals, and optimal humidity, lighting and noise control). So what would it take to turn that knowledge into action? Cutting through the jargon to explain complex processes in simple and compelling language, Allen and Macomber show how buildings can both expose you to and protect you from disease. They reveal the 9 Foundations of a Healthy Building, share insider tips, and show how tracking what they call health performance indicators with smart technology can boost a company's performance and create economic value. With decades of practice in protecting worker health, they offer a clear way forward right now, and show us what comes next in a post-COVID world. While the green building movement introduced important new efficiencies, it's time to look beyond the four walls--placing the decisions we make around buildings into the larger conversation around development and health, and prioritizing the most important and vulnerable asset of any building: its people.