Niagara Falls is the story of an extraordinary ecosystem larger than the state of Texas, and more precious than oil. The heartbeat of this remarkable water world is Niagara Falls. Through the eyes of passionate scientists and naturalists, we uncover a complex world forged by stone and powered by water. In this realm, tiny shrews hunt in freezing-cold rivers, spectacular shorebird migration unfolds over thundering falls, snowy owls stalk their prey from ice flows, and prehistoric snapping turtles brave a perilous overland journey. All these creatures and many more are part of a remarkable narrative unfolding in one of the most unique ecosystems in North America-Niagara.