updated 9:41 PM EST, Fri January 2, 2015
Sanjay Gupta predicts the nine biggest health challenges for 2015.
Errol Louis says Mario Cuomo, an unabashed liberal, flirted with a presidential run. His son, New York's governor, appears to be mulling the same. Is a nation struggling with inequality ready now?
Donna Brazile says Rep. Steve Scalise's meeting with a white supremacist group -- and the GOP's attempts to dowplay it -- shows politicians' willingness to trade away American values of dignity and equality for votes
Danny Cevallos says when the NYPD faced that pressing question recently, the result was arrests. Maybe it's time to rein in social media
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