These are the short news stories for things that happened on December 20, 2007: * Police say that the death on a Disney World roller coaster was natural - The police said that the death of a man at a roller coaster at the Walt Disney World Resort in Florida, United States happened because the man, named Jeffery Reed, had a disease, and not because the roller coaster was not working well. * Earthquake shakes New Zealand - A very strong earthquake shook, that is, made the ground move for a few seconds, a city called Gisborne, in the country of New Zealand. It made many buildings fall and made holes in the streets. No people were hurt badly.