In Antarctica, the impulse to explore clashes with the need to protect

Visiting Antarctica used to be a truly extraordinary trek. From just a few hundred explorers in the 1950s, to more than 120,000 tourists last year. Right now, tourism season is picking up again in Antarctica. Reporter Charli Shield brings us a look at the tension that business creates between exploration and preservation. She filed this story for our partners at Deutsche Welle, DW, and their show "Living Planet."