Nik Wallenda will make the first attempt at crossing Niagara Falls on a tightrope in over 100 years on June 15.<img src="http://feeds.feedburner.com/~r/DiscoveryNews-Top-Stories/~4/yguJS35wWFs" height="1" width="1"/>
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Nik Wallenda will make the first attempt at crossing Niagara Falls on a tightrope in over 100 years on June 15.<img src="http://feeds.feedburner.com/~r/DiscoveryNews-Top-Stories/~4/yguJS35wWFs" height="1" width="1"/>