Son of Polar Vortex: Cold and snow are moving back into the East. It’s 25 in Pittsburg, 25 in NYC and 32 down in Birmingham, Ala. But for NY and New England, it’s going to be single digits later in …

 Trouble With the Curve: Investigators have recovered the black box from the New York commuter train that crashed yesterday and will be focusing on how fast the train was going when it hit a tight curve. It should have been …