ABC News' Bob Woodruff travels to Bhutan, a carbon-negative nation battling climate change along its rapid flowing rivers. <br /><br />SUBSCRIBE to ABC NEWS: https://www.youtube.com/ABCNews/<br />Watch More on http://abcnews.go.com/<br />LIKE ABC News on FACEBOOK<br />https://www.facebook.com/abcnews<br />FOLLOW ABC News on TWITTER:<br />https://twitter.com/abc<br />GOOD MORNING AMERICA'S HOMEPAGE:<br />https://gma.yahoo.com/
