The Food and Drug Administration's top tobacco scientist has accepted a job at tobacco giant Philip Morris International, just weeks after he signed off on the company's latest vape product. Matt Holman, chief of the office of science in the agency's Center for Tobacco Products (CTP), announced his departure from the FDA on Tuesday, effective immediately, after having served at the agency for more than 20 years. His departure adds to ongoing trouble within the FDA's tobacco control division, which is currently under review by agency commissioner Robert Califf. It also follows the division's loss of Mitch Zeller, who retired...