Americans are being warned to be prepared for a COVID-19 summer surge, particularly across Southern states. Looking to learn from the past two years -- and plan for the future -- is Bill Gates, with his new book "How to Prevent the Next Pandemic." He tells Walter Isaacson why we should treat pandemics like fires.

Americans are being warned to prepare for a summer surge in COVID-19 cases, particularly across Southern states. Dr. Thomas Fisher witnessed the pressures of the pandemic first-hand as an emergency physician. He speaks with Michel Martin about his new book --"The Emergency: A Year of Healing and Heartbreak in a Chicago E.R." -- and the state of American healthcare.

Florida has become Ground Zero for America's culture wars. It’s the home state of Rick Wilson, a Republican strategist and vocal Trump critic. He sits down with Michel Martin to discuss what this might mean for the upcoming midterm elections.

France is helping to lead the EU’s opposition to the invasion of Ukraine, and President Macron’s re-election this past Sunday reinforced that commitment. Macron’s position is supported by his predecessor and former mentor, François Hollande, who has himself negotiated with Putin. In the wake of France's presidential election, Hollande spoke with Christiane in Paris.

Award-winning author and futurist Amy Webb examines the world of synthetic biology in her book "The Genesis Machine." She sits down with Hari Sreenivasan to discuss the science, its potential, and its concerns.

Juliette Kayyem, former assistant secretary for homeland security, is one of today's foremost thinkers on disaster management. Her latest book is a guide on what to do when things go wrong. She sits down with Hari Sreenivasan to discuss what we can learn from dealing with catastrophe.

Tesla and SpaceX CEO Elon Musk has reached a deal to buy Twitter for $44 billion. He says his goal is to bolster free speech on the platform. What does this mean for the future of one of the world’s most influential social media sites? Author, entrepreneur and professor Scott Galloway speaks with Hari Sreenivasan.

The New Yorker's Ronan Farrow recently investigated the commercial spyware industry and its implications for democracies around the world. He tells Hari Sreenivasan what he found.

As the war in Ukraine shifts to the south and east of the country, reports from the city of Mariupol have been silenced by intense bombardment. Civilians have been forced to shelter in basements, and promises of humanitarian corridors have repeatedly been broken. Alina Beskrovna was born and raised in Mariupol and spent a month there under siege before managing to escape.

Emmanuel Macron is the first French president in two decades to win re-election, comfortably beating his hard-right challenger Marine Le Pen in the second round this weekend. For more on this, Christiane, from Paris, speaks with Laurence Haïm, a French journalist who served as Macron’s spokesperson during his presidential campaign in 2017.

As the war in Ukraine rages on, the West is struggling to pull the plug on Russian oil and gas. Svitlana Romanko is a Ukrainian climate activist and environmental lawyer, and she speaks with Walter Isaacson about fossil fuel addiction and the impact of the war.

Russians protesting Putin’s invasion face harsh consequences. Opposition leader Vladimir Kara-Murza was detained by police last week as he was preparing to be interviewed by Walter Isaacson. Now Walter speaks with Vladimir’s wife, Evgenia Kara-Murza, about her husband’s continued struggle against Putin from behind bars.

The current surge in violent crime highlights the ongoing struggle between American law enforcement and the public. Justin Fenton chronicles the rise and fall of a Baltimore Police Department task force in his book "We Own This City." The author joins Michel Martin to discuss crime, cops, and corruption.

Clashes with Palestinians in Jerusalem have deepened a political crisis in Israel. Prime Minister Naftali Bennett’s fragile ruling coalition lost its one-seat majority earlier this month when a member of his own party defected. Now the coalition faces a mutiny. The Israeli Prime Minister is trying to hold his government together while attempting to help negotiate an end to the war in Ukraine.

63 House Republicans – nearly a third – voted against a recent resolution supporting NATO. It’s just one of a number of moves by the GOP in recent weeks that have set alarm bells ringing, including the RNC’s withdrawal from the bipartisan Commission on Presidential Debates. Longtime Republican strategist Sarah Longwell joins the program to discuss.

In his new book, David McSwane reveals that America's initial COVID-19 response was riddled with corruption and incompetence. The author joins Hari Sreenivasan to discuss pandemic profiteering.

Ukrainian officials say Moscow has completed its regroup and is preparing to launch its offensive in the east. Meanwhile, Kyiv, the capital, and the western city of Lviv are under missile attack. At least seven civilians – including a child – were killed in Lviv this morning. For the latest, Christiane speaks with the deputy mayor of Lviv.

In the decade since Facebook went public, social media platforms have transformed American society. Social psychologist Jonathan Haidt speaks with Hari Sreenivasan about what went wrong and how social media could become less corrosive.

Journalist Mark Follman has spent the past decade researching gun violence in America. His new book "Trigger Points" details how leaders could go beyond thoughts and prayers and actually address the problem. He speaks with Michel Martin as Brooklyn recovers from this week’s subway shooting.

Benjamin Ferencz is the last surviving prosecutor from the Nuremberg trials, winning convictions against 22 Nazi defendants in 1947. Christiane speaks with him about his experience, and his thoughts about the war in Ukraine. It’s clear that in his 103rd year, Ferencz has not given up on his fight for justice -- or his faith in peace.