Walter Isaacson tells Christiane what it's like to participate in a vaccine trial.
CNN senior medical correspondent Elizabeth Cohen discusses Moderna and Pfizer's vaccines.
Senate candidate Jon Ossoff (D-GA) discusses the runoff election.
Chimamanda Ngozi Adichie joins the program.
Renée DiResta joins the program.
Epidemiologist Michael Osterholm discusses the fight against COVID-19.
President Trump's niece Mary Trump explains his aversion to losing.
Sen. Chris Coons (D-DE) discusses Pres. Trump's refusal to concede the election.
James Jeffrey, former Special Rep. for Syria Engagement, joins the program.
Paola Ramos and Jorge Ramos join the program.
Madeleine Albright discusses President Trump's refusal to concede the election.
Rep. James Clyburn (D-SC) reacts to Joe Biden's presidential win.
Christ Ruddy discusses the presidential election.
Federica Mogherini joins the program.
Sen. Bob Casey (D-PA) explains how Trump's voter fraud claims undermine national security.
Election law expert Trevor Potter discusses Trump's election fraud claims.