Where people live and work, what they eat, how much they exercise (or don't), these factors all contribute enormously to the health of populations. So does policy, access to healthcare, and much more. Columbia Public Health Now asks Columbia faculty to weigh in on the public health challenges of today and consider their implications for the health and well-being of populations around the world. This spring, we are exploring the novel coronavirus. COVID-19's global spread is without historical precedent, touching on all aspects of society. Join us as we attempt to unravel some of the mystery