The population of cheetahs is dwindling fast, due in part to demand fueled by social media celebrities displaying the animals as pets, next to fast cars and exotic locations. Crawford Allan has spent decades fighting wildlife trafficking, and he joins the program to explain why this is still happening and what can be done to stop it.

In the wake of the Trump administration reinstating the federal death penalty, Christiane speaks with renowned campaigner Sister Helen Prejean. Prejean is best known as the author of "Dead Man Walking," which was subsequently adapted into a film of the same name. She joins the program to discuss executions, campaigning, and her latest book, which reflects on her life at age 80.

Acclaimed director Gurinder Chadha teamed up with journalist Sarfraz Manzoor to tell a deeply personal story. Their film “Blinded by the Light” is based on Manzoor’s memoir, following a young Pakistani-British teenager in 1980s London as he finds unlikely salvation in the music of Bruce Springsteen. They sat down with Hari to tell him about their own fateful encounter with The Boss.

Journalist Jaafar Abdul Karim is a voice for tolerance and respect in a troubled Germany, with his award-winning programs on the Deutsche Welle network. He gives young Arabs around the world a platform to break taboos and open minds, and speaks directly with those most hostile to migrants and refugees.

Violence in Philadelphia has added fuel to calls for some kind of political action to combat the epidemic of gun violence. President Trump has said he wants enhanced background checks, but there’s still no definitive commitment to take action. Scott Jennings has worked closely with Senate Majority Leader Mitch McConnell, and joins the program to discuss whether gun reform might finally happen.

Danny Meyer is well known for turning Shake Shack from a hot dog cart in Manhattan into a global burger empire. But he’s also the founder of some of New York’s most acclaimed names, including Gramercy Tavern, Union Square Café, and Maialino. The key to his success is great service, and he sat down with Walter Isaacson to discuss his illustrious career.

Soon, people applying for green cards could be turned down if they’ve received certain benefits, or even if they’re deemed likely to use them in the future. Cesar Vargas became famous as the first undocumented immigrant admitted to the New York State Bar, and is now a US citizen working for immigration reform – and very much opposed to the Trump administration’s latest immigration rule.

The new documentary “American Factory” is the first film from the Obamas’ High Ground Productions. It explores the Chinese Fuyao Glass plant, based in Dayton Ohio, as Chinese and American workers – and their bosses – struggle to build an efficient, modern business, amid the inevitable clash of culture and workplace ethics. Co-Directors Julia Reichert and Steven Bognar join the program to discuss.

Hari Sreenivasan delves into the perils of technology and the alt-right with Caleb Cain, who became radicalized watching YouTube, and columnist for the New York Times Kevin Roose, whose reporting explores how people like Caleb are groomed online.

As tensions flare between protesters and police in Hong Kong, former acting U.S. Ambassador to the U.K. Lewis Lukens discusses President Trump's reaction to the conflict.

Filmmakers Perri Peltz and Matthew O’Neill discuss their new documentary, “Alternate Endings: Six New Ways to Die in America,” introducing a group of people nearing death, who plot surprisingly unconventional ways to handle their final days on earth.

Michel Martin sits down with author Casey Gerald to reflect on the 400th anniversary of the first documented arrival of African slaves to American shores and what’s at stake in remembering this sombre past.

As protests reach boiling point in Hong Kong and Chinese officials accuse the demonstrators of showing signs of “terrorism,” one of the movement’s main leaders, Joshua Wong, discusses how far they’re willing to take this.

U.S. House democrat Tom Malinowski, who served as assistant secretary of state for democracy and human rights under President Barack Obama, weighs-in on the spate of unrest in Hong Kong, Kashmir and Moscow, and what he calls a global clash of ideologies.

As multi-millionaire Jeffrey Epstein is found dead in his cell while facing decades in prison on federal sex trafficking charges, McKay Coppins, staff writer at The Atlantic, discusses conspiracy theorists’ reactions to the shock death, and the increasing threat from fake news and misinformation.

Competing world views can be deeply distorted by the warped mirror of social media. New Yorker writer Jia Tolentino calls the internet “an engine of self-delusion.” She explores its power to distort in her new book of essays, called “Trick Mirror,” and sat down with Alicia Menendez to discuss the allure of false promises online.

Donald Trump’s winning strategy for 2020 lies largely in the hands of white evangelical voters. Meanwhile, the proportion of minority voters is growing—a trend that favors Democrats—but it will take several election cycles before that demographic change is reflected at the ballot box. Robert P. Jones is founder of the Public Religion Research Institute, and has studied these changes in depth.

In the summer of 2014, 2,000 lives were lost in a 50-day Israeli war on Hamas in Gaza. The events leading up to that conflict are the focus of a new HBO series, “Our Boys.” Co-directors Joseph Cedar and Tawfik Abu-Wael join the program to discuss.

Michel Martin sits down with Oscar-winning actress Geena Davis and director Tom Donahue to discuss their new film “This Changes Everything,” which tackles the need for more female representation in media.

As the United Nations warns we need to rethink what we eat and how we produce it, leading climate expert Michael Mann explains why this message is both vital and urgent.