Apocalyptic wildfires are decimating Australian flora and fauna, with one expert saying that hundreds of millions of animals have probably been killed. To assess this dire situation, its causes and whether there is any cause for hope, Christiane speaks with Australia’s best known climate scientist Tim Flannery.

Former U.S. National Security Advisor Stephen Hadley discusses the death of Qasem Soleimani and what the future will look like for the U.S. and Iran.

Back in 2017, Carmen Bambach, a curator at New York's Metropolitan Museum of Art, shaped the most historic and expansive exhibit of Michelangelo to date. Now, on the 500th anniversary of his death, she dives into Leonardo's groundbreaking work in a new book. She sits down with our own Leonardo expert, Walter Isaacson, to discuss the Italian master.

The news today is enough to send anxiety levels through the roof, but Dr. Rangan Chatterjee is here to help. He argues that stress today is making us sick - some 80% of the health issues he treats in his patients can be traced back to stress, made much worse by the blurring of work and home life. He joins the show to diagnose the issue and give us a prescription for how it could be fixed.

In Moscow, President Putin has wrapped up the year with his annual press conference. The Russian leader fielded questions on a whole host of issues, including the death of a Georgian man killed in Berlin in August. German prosecutors suspect Russia may be behind the murder, but Moscow denies it. Journalist Heidi Blake has been tracking similarly suspicious deaths and joins the program to discuss.

In 2018, Greta Gerwig became the fifth woman ever to be shortlisted in the Best Director category at the Academy Awards for "Lady Bird," an ode to mother-daughter relationships. She continues her exploration of strong female characters with an adaptation of the Louisa May Alcott classic, "Little Women." She sits down with Michel Martin to discuss this new project.

In the U.K., tensions between the ruling Conservative Party and the British media are rising. During the election campaign, Prime Minister Boris Johnson refused to sit down for the main BBC election interview. And since his win, he has threatened the BBC's primary source of funding: the license fee. Journalist Michael Crick and historian Anne Applebaum join the program to discuss the situation.

Boris Johnson laid out his agenda with the traditional Queen's Speech in parliament today. Top of his wish list is finishing Brexit, trade deal and all, by this time next year. It's an incredibly ambitious deadline which sets up another year of roller coaster politics. Former Prime Minister Tony Blair joins the program to discuss this and the deeply partisan politics rocking the U.K.

As the Trump administration pushes to resume federal executions, a new film called “Clemency” looks at the moral questions of death row and emotional demands on executioners. The film won the grand jury prize at Sundance this year, making director Chinonye Chukwu the first African American woman to win it in the festival’s 35 year history. Chukwu joins Michel alongside lead actor Alfre Woodard.

Today is a historic day for the American presidency, as the House votes on the impeachment of President Trump, in what would be the third impeachment of a president in the 243 year history of the republic. Scott Walker was a rival of Trump’s for the GOP nomination in 2016, and he joins the program to outline the GOP point of view.

To assess the impeachment efforts and the constitutional and political implications, Christiane speaks with a transatlantic panel of expert journalists and commentators in New York, Washington D.C. and London.

Ronny Chieng had his breakthrough last year as Eddie Cheng in “Crazy Rich Asians," a fictional portrait of the glitz and drama of the Singapore elite. Today, he makes his debut on Netflix with “Asian Comedian Destroys America," where he explores the U.S. from his unique vantage point. He gives Hari a preview of the show.

Politics are well and truly cemented along party lines in the Democrat-controlled House and Republican-controlled Senate when it comes to the impeachment proceedings, but what is President Trump’s view of the process? Chris Ruddy is CEO of Newsmax and a close confidant of the president, and joins the program in London.

A new film takes a look at the pivotal moments that led to Pope Francis' papacy. “The Two Popes” explores the unique relationship and clash of cultures between then-Cardinal Jorge Bergoglio of Argentina and Pope Benedict XVI. Jonathan Pryce plays Pope Francis, and joins the program to discuss the film and its political message.

Polarization seems to be the default state of U.S. politics these days, but how did it get so toxic and divided in the first place? Ezra Klein is a policy journalist and co-founder of Vox, and his new book delves into that very issue. He joins the program from California to discuss.

An estimated 1.1 million people are living with HIV in the U.S., and it’s gay black men who are most at risk. Steven W. Thrasher is the Daniel Renberg Chair of Social Justice Journalism at Northwestern University, and he says that while new HIV infection rates are dropping in cities around the U.S., HIV is actually on the rise in rural areas. He speaks with Hari about the crisis.

Democrats have released a 658 page report that lays out in detail the evidence behind their charges of obstruction of justice and abuse of power against President Trump. The vote may take place in the House this week, but when the trial comes to the Senate, the odds are in the president’s favor. Former Louisiana Governor Bobby Jindal offers a Republican perspective on the situation.

The treatment by China’s government of its Muslim Uyghur minority has been both shocking and underreported, but it received a lot more attention this weekend thanks to soccer player Mesut Özil, who criticized China’s treatment of the Uyghurs and the subsequent silence of much of the Muslim world. Christiane speaks about the situation with Uyghur activist Ferkat Jawdat.

The two week COP25 climate summit in Madrid closed with key nations dragging their feet over regulating the global carbon market. Despite desperate pleas from activists, carbon cutting was kicked down the road with a compromise that will see new plans negotiated at next year’s summit in Glasgow. Former Secretary of State John Kerry joins the program to discuss this outcome.

With his large majority, Boris Johnson will push the first stage of Brexit through Parliament by January 31st. But what does his promise to “get Brexit done” really look like? Europe will have an important say. Helle Thorning-Schmidt, former Danish Prime Minister and wife of British Labour MP Stephen Kinnock, joins the program to discuss perspectives from both sides of the English Channel.