blog posts Mobile app helps young adults talk with friends about risky drug, alcohol use Mar 4, 2021 8:45 am by Sharita ForrestOutreach Share on Facebook Tweet Email Images Designed for people ages 18-29, the Harbor app teaches young adults how they can 'act as first responders for their close friends who demonstrate risky substance use behaviors,' according to the app’s lead developer, professor Douglas C. Smith. Share on Facebook Tweet Email