Polar vortex forces Chicago rail crews to use fire to keep trains moving
Chicago rail crews are ensuring the tracks don't freeze during the Polar Vortex through gas-fed systems that generate heat near the lines so the rails don't pull apart.
Polar vortex sends temperatures plunging in much of US
Kentucky governor Matt Bevin received pushback Tuesday for sneering at school districts’ decision to cancel classes ahead of what is expected to be some of the coldest temperatures ever recorded in the Midwest.