"World News Tonight With David Muir" Podcast - March 17, 2015

Congressman Aaron Schock resigns: After decorating his office in the style of "Downton Abbey," the Republican Congressman from Illinois steps down in the midst of an investigation by the Office of Congressional Ethics. 

Nude Facebook Photos: College students becoming targets for fraternities and college sports teams via Facebook and text. 

Retiring from the NFL: A top rookie, retiring at 24. He says he's concerned about traumatic brain injuries, and the game's just not worth the risk.

American Accused of Trying to Join ISIS: The former Air Force Mechanic's computer confiscated by authorities, who found videos he watched before they say he tried to join up with ISIS in Syria.

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