NewsNation’s Natasha Zouves investigates a secret U.S. Army experiment in St. Louis, where a mysterious fog once drifted through a neighborhood of more than 10,000 people. The chemical contained cadmium, a known carcinogen and decades later, residents are getting sick, some with rare cancers. Now they’re asking: What else was in that spray? NewsNation’s Natasha Zouves continues the investigation. MORE: https://www.newsnationnow.com/us-news/military/did-government-poison-st-louis/ | NewsNation