Glaciers are melting at an alarming rate. These icy behemoths developed over tens of thousands of years, but now, due to global warming, they are simply becoming nothing but ice water.
Sean Thomas traveled to Mt. Elbrus and spoke with Viktor Popovnin, a glaciologist who has devoted his life to studying this phenomenon. Popovnin shared the knowledge and experience he's picked up during the course of his fascinating, dangerous, and extremely important work.
