Some areas of the U.S. may see temperatures as low as -20 or -30 degrees early next week as arctic air from Siberia rolls in.
A widespread swath of the country, from the northern Rockies to the East Coast, is bracing for a blast of Arctic air into ...
Scientists show the remains of a 50,000-year-old baby mammoth uncovered by melting permafrost in Russia's Siberia. (Michil Yakovlev, Mammoth Museum at the Russian North-Eastern Federal University ...
Three surges of Arctic air will chill the United States over the next two weeks, each one more significant than the last.