Daniel Swain in Reuters — Explainer: What’s causing the recent U.S. heat waves?

“Climate change is making extreme and unprecedented heat events both more intense and more common, pretty much universally throughout the world,” said Daniel Swain, a climate scientist at UCLA. “Heat waves are probably the most underestimated type of potential disaster because they routinely kill a lot of people. And we just don’t hear about it because it doesn’t kill them in, to put it bluntly, sufficiently dramatic ways. There aren’t bodies on the street.”