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Uwe Zucchi / AFP - Getty Images
Frost-covered trees can be seen at the Essigberg near Kassel, Germamy on Jan. 30. The Siberian cold front "Cooper" brings icy temperatures dropping to 14 degrees Fahrenheit in some parts of the country.
Patrick Semansky / AP
Winter has arrived in the Northern hemisphere. Take in the sights from North America, Europe and Asia.