Journalist Bob Woodruff and his 28-year old son Mack kick off their around-the-world adventure in Colombia -- a country once notorious for narco trafficking that now wants to be known for eco-tourism. With the end of a long-running civil war, vast swaths of untouched wilderness are now accessible to visitors for the first time in decades.
In the imagination of adventure travelers, Papua New Guinea is the last frontier -- a wild place that's so far from the familiar world, it can feel like traveling back in time. So naturally, getting lost in this vast, largely unexplored island has become a rite of passage for any explorers worth their salt.