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16:38
Dr. Helene Gayle joins the program.

1:03
Angélique Kidjo joins the program.

2:51
Norwegian Prime Minister Erna Solberg joins the program.

3:01
Kara Swisher and Carl Cameron join the program.

3:01
David Axelrod joins the program.

2:55
Former UK Chancellor of the Exchequer George Osborne discusses the UK's current situation.

13:32
Former U.S. Surgeon General Dr. Regina Benjamin joins the program.

2:55
Mark Suzman, CEO of the Bill & Melinda Gates Foundation, joins the program.

2:29
Former Treasury Secretary Lawrence H. Summers discusses the state of the economy.

2:53
Medical experts Tim Spector and Dr. Celine Gounder join the program.

2:59
Greece's prime minister tells Christiane how his country is coping.

17:11
Temple University professor Sara Goldrick-Rab discusses the crises facing students.