By Vanessa Callison-Burch, Product Manager, Jennifer Guadagno, Researcher, and Antigone Davis, Head of Global Safety There is one death by suicide in the world every 40 seconds, and suicide is the second leading cause of death for 15-29 year olds. Experts say that one of the best ways to prevent suicide is for those in distress to hear from people who care about them. Facebook is in a unique posit

