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Nik Wallenda's Risky Stunt for Discovery Channel Points to TV's Audience Troubles - The New York Times
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Niagara Falls tightrope walk: Nik Wallenda to attempt 1st highwire crossing above falls | Daily Mail Online
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Niagara Falls tightrope walk 2012: Walker Nik Wallenda becomes first person to cross | Daily Mail Online
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Niagara Falls tightrope walk 2012: Walker Nik Wallenda becomes first person to cross | Daily Mail Online
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