Hundreds of feet from New Orleans City Hall, a six-foot long, collapsible table stands on the grass, alongside a paramedic tent and an impromptu meal station. On Tuesdays around 3 p.m., a rough line...

Substance abuse on university campuses is a nationwide problem, and as the opioid epidemic cripples the United States, some students might feel inclined to try dangerous drugs. Opioids have a high...