Temperatures dipped to 5 degrees in Evansville early Monday morning, and the wind chill reached minus-6 degrees.
January in Russia conjures up images of Muscovites crunching through the snow in bulky coats -- not bunches of delicate snowdrops blooming in grassy areas around still-standing Christmas trees ...
A polar vortex dipping down from Siberia is bringing a cold front with frigid temperatures to millions Americans. See maps of ...
Earth’s magnetic field, generated by movements within its molten iron core, serves as a protective shield against solar winds ...
A boy plays in the snow during Siberia's notoriously cold winter.
Earth’s magnetic north is not static. Like an anchorless buoy pushed by ocean waves, the magnetic field is constantly on the move as liquid iron sloshes around in the planet’s outer core.