Across the Niagara Falls on a tightrope

A daredevil American, Nik Wallenda, became first person in the world to walk on a tightrope across the roaring Niagara Falls, separating U.S. and Canada. A high-wire artist Wallenda, 33, defied predictions of naysayers who warned him of everything from falcons to fierce winds toppling him as he braved heavy winds and heavy...

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