What we know about PTSD, a new research initiative on guns in America, helping kids cope with trauma, and more.

We discuss myths and facts about PTSD; new support for gun policy research; how U.S. political polarization impacts competition with China; the high stakes of teen vaping; a promising mental health awareness campaign in California; and China’s long-range bomber flights. For more information on this week's episode, visit rand.org/podcast.