Snow covers a street sign at the corner of Wall St. and Broad St. in New York's financial district, February 10, 2010. A blizzard lashed the U.S. East Coast for the second time in less than a week, wreaking havoc from Washington to New York by forcing government agencies, the United Nations and schools to close. REUTERS/Brendan McDermid (UNITED STATES - Tags: ENVIRONMENT BUSINESS)