 This is NPR News. I'm Marco Werman. The World's Newsroom brings you the big picture stories and some other stuff. The whole of Niagara Falls is ripping over my right shoulder. As an ice climber, it's the largest, wildest thing I could think of climbing, and it's never been climbed. So I'm really happy to have had the opportunity to go and stick an ice tool into it. Join us and hear the world.