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 while covering conflict in Southeast Asia and was the last Western journalist to interview Khmer Rouge leader Pol Pot, has died.

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