TODAY takes you up a 180-foot tree in the Amazon

There’s much more to Brazil than Rio de Janeiro: there’s the Amazon, 2 million square miles of nature containing an estimated 390 billion trees. NBC’s Keir Simmons climbs only one of them, but it’s a big one: 180 feet tall. And though the climb is arduous, the view from the top makes it worth it! (Run time: 3:04)