The unprecedented floods in Pakistan that have killed more than 1,600 people and directly affected 33 million are the result of years of planning failure coming head to head with climate change. In a two-part conversation, Dr. Josh Sharfstein talks with Dr. Debbie Guha, the head of the Center for Research on the Epidemiology of Disasters at the Lovain School of Public Health in Belgium about the scale of the disaster and contributing factors, and then to Dr. Ben Zaitchik, a Johns Hopkins Professor of Earth and Planetary Sciences about the role of climate change and why these floods are a warning to all of us.