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As many as 21 people lost their lives while millions of people were left without power on Tuesday after a ruthless cold wave gripped Texas and brought killer tornadoes there.
The unprecedented cold wave has engulfed vast areas of the United States, closing COVID-19 vaccination centers and impeding vaccine supplies. It is not expected to continue until the weekend.
Officials in Texas attracted censure as the state energy grid continually failed, forcing regular outages. Subzero weather allayed giant wind turbines that dot the West Texas landscape, making it impossible for energy companies to meet mounting demand.