A topic that we think about a lot here locally -- fentanyl addiction...it is ugly, dangerous, and running rampant throughout the country, especially here in Seattle, in fact, last year in King County there were reportedly 1,060 fentanyl related deaths, a record high. Dr. Christian Lüscher from the University of Geneva is looking into the fentanyl crisis. He is visiting the Allen Institute to explain his work surrounding how the drug impacts the human brain.