I am a medical sociologist, which means I study the health of whole societies. I've spent more than 20 years studying the best possible ways to address alcohol problems in societies -- what works and what doesn't to protect people from harm. I work as a professor in the University of California, San Francisco School of Medicine and at the UCSF Clinical and Translational Science Institute. This allows me to connect with other scientists who come from very different backgrounds but who want to work together on big problems -- think of a Manhattan Project, only one focused on protecting...