Segment 1: Guest: Dr. Carl Erik Fisher, psychiatrist, assistant professor, Columbia University, author, The Urge: Our History of Addiction, joins us this week to share his own story with addiction and what can be done to improve treatment for people suffering from substance abuse issues. https://www.samhsa.gov/find-help/national-helpline. Segment 2:Guest: Dr. Susan Shaheen, professor, civil and environmental engineering, University of California-Berkeley, co-director, Transportation Sustainability Research Center, University of California-Berkeley, highlights the country’s current infrastructure and what more needs to be done to promote greater citizen mobility with bikes, scooters and other non-motor modes of transportation. https://ce.berkeley.edu/people/faculty/shaheen