A New York City teacher had a breathtaking—and slightly nerve-wracking—encounter with nature while swimming at the edge of Victoria Falls in Zimbabwe, capturing a rare double rainbow in the process.

America's great outdoors are filled with some of the world's most breathtaking waterfalls. From the epic roar of Niagara Falls to small, hidden gems tucked away in a mountain creek, the vast landscape ...

Several large rocks and boulders plunged from the overhang at the top of a popular Utah waterfall — and just barely missed a family swimming below, video shows. Visitors to Lower Calf Creek Falls, a ...