Tightrope walker Nik Wallenda, “The King of the High Wire,” has made history by becoming the first person ever to cross over the Grand Canyon.  This was the highest tightrope walk ever attempted by Wallenda -- towering 1,500 feet (~ 457 m) above the Little Colorado River, a height greater than the Empire State Building. Discovery Channel’s SKYWIRE LIVE WITH NIK WALLENDA aired LIVE across the United States and in 223 countries on Sunday, June 23. … [Read more...] about Discovery Channel captures Nik Wallenda’s historic tightrope crossing over The Grand Canyon