What Caused Cuba's Sonic Attacks?

For the past year, scientists have been trying to understand what caused the mysterious "acoustic attacks" against U.S. diplomats in Cuba. Since late 2016, at least 26 people have experienced a litany of mysterious symptoms, including hearing problems, headaches, ear pain, dizziness, nausea, fatigue, and having trouble focusing, intense enough to land them in the hospital but with no recognized cause. In February, the Journal of the American Medical Association published a study by University of...