One of the strongest earthquakes to shake northern Italy rattled the region around Bologna early Sunday, a magnitude-6.0 temblor that toppled some buildings and sent residents running into the streets, emergency services and news reports said. (May 20) Subscribe to the Associated Press: http://bit.ly/APYouTube Download AP Mobile: http://www.ap.org/mobile/ Associated Press on Facebook: http://apne.ws/c7lQTV Associated Press on Twitter: http://apne.ws/bTquhb Associated Press on Google+: http://bit.ly/zuTKBL