Usain Bolt Breaks His Own World Record

Olympic Sprinter Usain Bolt broke his own world record from the 2008 Olympics. Saturday at the International Association of Athletics Federations or IAAF, World Championships in Berlin, Bolt ran the Men's 100-meter dash in 9.58 seconds. He shattered his previous world record from the Olympics of 9.69 by 0.11 seconds. He expressed his excitement over his accomplishment to the over half a million people in attendance saying, “I knew I could do it. You guys are the best crowd ever. You gave me energy!"