Host Tiziana Dearing speaks with the lawyer representing three Massachusetts vaping retailers, who now filed a federal lawsuit challenging a four-month ban on the sale of vaping products. Plus, four people from Massachusetts won a 2019 MacArthur Fellowship or Genius Grant. One of them is Ocean Vuong, a writer and a poet who lives in Northhampton and teaches at UMass Amherst. Also, Nicholas Burns, former Ambassador to NATO, on President Trump's interactions with Ukraine after more than 300 former national security professionals signed an open letter calling Trump's actions "an unconscionable …