With new reports of people getting sick and politicians vowing to crack down on electronic cigarettes, the industry leader, Juul, is looking for new research on the health effects of its products. But the vaping giant has had difficulty finding scientists to take on that research, and the few who have accepted Juul’s overtures face blowback. Plus: Nearly 50,000 members of the United Auto Workers went on strike against General Motors today, and oil prices jumped following an attack on Saudi oil facilities.