For nearly a century, insulin has been a life-saving diabetes treatment. Now scientists are testing a tantalizing question: What if pills containing the same medicine patients inject every day could also prevent the disease?
Ever since Mario Jose Bergoglio became Pope Francis in 2013, the region's political elite have beaten a path to the Vatican. Cuba's Raul Castro, Colombia's Juan Manuel Santos and Brazil's Dilma Roussef have all been granted audiences. Argentina's Cristina Fernandez has become a regular at the Holy See, visiting her countryman and one-time foe five times.