text: When Nik Wallenda walks a high wire across Niagara Falls, continues a family tradition that dates back centuries.
"People say I'm insane all the time, but they don't understand that this is something I've done since I was 2. It's just in my blood," he said.
Wallenda is a seventh-generation member of the Great Wallendas, a travelling family circus troupe. He traces his family's performance history back to 1780s Europe, during the era of the Austro-Hungarian...Full Story