Couple spending a year outdoors to protect Boundary Waters from mine pollution

World adventurers Dave and Amy Freeman have been living in the Minnesota wilderness for more than 300 days in hopes of protecting the Boundary Waters Canoe Area Wilderness from potential pollution that could be caused if a Chilean mine starts digging near the lakes’ headwaters. NBC’s Harry Smith reports for Sunday TODAY. (Run time: 3:43)July 31, 2016