Just how powerful is the FDA? Is Merck about to spend $40 billion? And what's a "Puff Bar"? STAT Washington correspondent Nicholas Florko joins us to discuss the FDA's decision to ban the sale of Juul Labs vaping products and a proposal to reduce the amount of nicotine in cigarettes. We’ll also explain the latest news in the life sciences, including a rumored blockbuster buyout and the next Theranos verdict.