Green Business News: Study changes picture of U.S. quake hazards Study changes picture of U.S. quake hazards ================================================================================ feeds.reuters.com on 30 July, 2010 04:01:21 WASHINGTON (Reuters) - The risk of earthquakes in the U.S. Midwest may be more widespread than geologists have believed, but a "big one" may be less likely at Missouri's New Madrid fault, researchers said on Wednesday.