I am an atmospheric scientist. I study weather and climate in my regular job as a professor at Columbia University, where I am directing the new Initiative on Extreme Weather and Climate. I also write and speak to broader audiences. My first book, Storm Surge, was recently published by Harper-Collins. It is about Hurricane Sandy, and issues related to it: climate change, the science behind both weather forecasts and climate projections, and how we as human beings and societies cope with environmental risks.