Sal Khan only wanted to help his cousin with her math when he started posting educational videos online. Not too long after that, he began the Khan Academy. 11 years later, it has some 5 million subscribers on YouTube and reaches across the globe. The non-profit’s goal is to give a free, world-class education for anyone, anywhere. Khan sat down with Walter to talk about how he hopes to achieve it.

It’s been a long time coming, but Robert Mueller’s report into the Trump campaign has finally been released to the public, sending journalists and political pundits poring over it, trying to properly digest its 400 pages of legal intricacies and decipher its redactions. Political analyst John Avlon breaks down what is in the report and what he thinks is most significant.

President Trump was quick to claim total victory after Attorney General Barr’s press conference today, tweeting “Game Over.” David Urban is a stalwart ally of President Trump, having served as a strategist on his 2016 campaign, and now working on his 2020 advisory committee. He joins the program from Washington to give the administration’s perspective on the report.

The release of the Mueller Report today is an historic moment, but is not without parallel. Renowned historian Sean Wilentz joins the program from Princeton to put the day’s events into a broader historical context.

Marriage and children has long been fertile ground for comedy, but rarely examined with such biting wit as in “Catastrophe”, the fourth and final season of which was recently released on Amazon Prime Video. Irish writer Sharon Horgan and American comedian Rob Delaney co-write and co-star in the critically acclaimed show, and join Christiane from LA to discuss love, grief, and laughter.

29-year-old first time director Nia DaCosta's film "Little Woods" made waves when it first premiered at the Tribeca Film Festival last year. DaCosta sits down with Alicia Menendez to discuss the experience of writing and directing Little Woods -- and the exciting projects that lie ahead for the director.

Measles is making a comeback, with infections up 300% in 2019 compared to last year. In poorer countries, this is often due to limited healthcare access, but in the US, avoiding vaccinations is often an active choice driven by false information. Paul Offit is a pediatrician and vaccine expert, and he joins the program from DC to urge parents to vaccinate their children.

Alicia Menendez sits down with Mitchell S. Jackson, a drug dealer turned author and justice reform advocate, as he discusses the moment he realized he needed to change paths.

Alicia Menendez sits down with Dr. Homer Venters, a man who was once one of the top doctors in Rikers Island, one of New York City’s most violent jails. Now, his book “Life and Death in Rikers Island” exposes the extreme health risks for inmates and staff, in a jail where brutality and abuse have become commonplace.

Rwandan genocide survivor Denise Uwimana was nine months pregnant when the Hutu militia attacked her village in 1994. She discusses her memoir and the work her non-profit does to help other genocide survivors.

One of Britain’s top presenters, Mishal Husain, draws from her decades of experience in the media industry, and lays out advice for other women climbing a challenging career ladder.

Cindy McCain, the matriarch of one of America’s most prominent political families, sits down with Hari Sreenivasan to discuss veteran's rights, her work fighting against human trafficking and her plea to bring civility back into U.S. politics.

Walter Isaacson sits down with New York Times columnist David Brooks, to discuss his new book, “The Second Mountain” and why he believes America is in a spiritual crisis.

Hari Sreenivasan discusses the impact of climate change on our mountains and glaciers, with David Breashears, a man who’s seen it all first-hand as a veteran mountaineer.

Michel Martin speaks to Mississippi author Kiese Laymon about his poignant memoir “Heavy,” which takes a look at what it means to grow up in a society that oppresses black people, from eating habits to domestic violence, and how his upbringing was marked by struggle, a disciplinarian mother, and racism.

Emilio Estevez may be best known for his role in classic teen films like “The Breakfast Club”, but his new work has a more literary and socially conscious ambition: “The Public” – which he wrote, directed, and starred in – is a story of social activism and civil disobedience, set in Cincinnati, Ohio, and it centers on an uprising staged by the city’s homeless inside the public library.

As the Israeli elections approach, many expect to see Prime Minister Benjamin Netanyahu re-elected to a fourth consecutive term, despite facing indictment for multiple counts of bribery and fraud. Ayelet Gundar-Goshen is a prominent Israeli novelist and psychologist, and she joins the program to explore the fault lines and political narratives of her home country.

Robert Caro is perhaps America’s greatest living biographer, with his books on Lyndon Johnson and Robert Moses considered the definitive works on those men. Now 83, he is hard at work on the final volume of his Johnson biography, but has carved out the time to document a little of his own life and research methods in his new book “Working.”

Over the past 20 years, Niall Ferguson has presented documentaries and written numerous historical tomes that chart the rise and fall of western empires. He sits down with Hari to talk about the rise of hate crimes in America, the US/China trade talks, and the current state of Brexit.

Jared Cohen is best known as a former advisor to Condoleezza Rice and Hillary Clinton, and as the founder and CEO of Google’s thinktank Jig Saw, but his latest venture has taken some by surprise: a book on American political history. “Accidental Presidents” examines the eight men who have ascended to the highest office in the land without being elected after their predecessors died in office.