A series of winter storms and widespread power outages gripping Texas and other states not used to suchextreme low temperatures are creating big challenges in the nation's food supply networks.Grocery chains like Walmart and Publix have been forced to close some stores because of either lack of poweror lack of workers. And at locations that remain open, customers complain of long lines outside and then emptyshelves once they get inside. Texas grocery chain H-E-B, for example, closed some stores and is limitingcustomer purchases of items like brisket and propane tanks.
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