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11:59
Former FDIC Chair Sheila Bair joins the program.

2:45
Historian Archie Brown joins the program.

3:00
WHO adviser Jamie Metzl discusses President Trump's defunding of the organization.

1:58
How will history record this period? Eminent historian Margaret MacMillan weighs in.

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.

2:56
General Terrence O'Shaughnessy joins the program.

1:17
Will.i.am discusses his new single "Sing for Life."