Even though 'Vulcan' was the top choice among voters, the International Astronomical Union opted to go with the second- and third-most-popular proposed names. Pluto's fourth and fifth moons are now officially known as Kerberos and Styx.
Grand Canyon tightrope walk: Funambulist Nik Wallenda traversed a 1,500-foot gorge near the Grand Canyon on a 2-inch-thick steel cable on Sunday, carrying with him a 43-lb. pole. Why did he bring such a heavy pole?