The journey: Michael Brown on photography at the edge of the world

Michael Brown is an award-winning director and a pioneer of adventure filmmaking. He has summited peaks on all seven continents (including five summits of Mount Everest) and made first kayak descents of wild rivers in places like Bhutan and Chile, all with the camera rolling. Brown goes into some of the world's most hostile environments -- where there's little room for error -- and comes away with stunning visual footage and stirring stories that remind us of our shared humanity. He believes tha...