David Boren, the former Oklahoma governor and longtime U.S. Senate intelligence chief who went on to lead the University of Oklahoma after his retirement from politics, has died.

Nate Thayer, a fearless reporter who survived several brushes with death over decades covering conflict in Southeast Asia and was the last western journalist to interview Pol Pot, the leader of the murderous Khmer Rouge regime in Cambodia, has died.

Ted Koppel will anchor a special edition of “CBS Sunday Morning” this weekend probing the nation's divisions.