On April 30, 1975, the Communist capture of the city of Saigon brought an end to more than 20 years of war in Vietnam. The end of the war reunified a divided nation—and changed the course of global politics, military strategy, and international relations for decades to come. In the six lectures of The Fall of Saigon: The Vietnam War 50 Years in Review, historian Edward G. Lengel takes you back to the final years of the long and complex conflict that ravaged the small Southeast Asian nation of Vietnam and bled disastrously into surrounding countries, altering the region forever.

Thirty years ago, award-winning journalist Jon Ronson stumbled on the mystery of Carol Howe—a charismatic, wealthy former debutante turned white supremacist spokeswoman turned undercover informant. In 1995, Carol was spying on Oklahoma’s neo-Nazis for the government just when Timothy McVeigh blew up a federal building in Oklahoma City, killing 168 people.

Humpback whales are among the most intelligent animals on Earth. Some scientists believe they might even surpass humans in self-awareness, empathy, and communication skills. In this episode, we swim with a whale as he teams up with other humpbacks to use bubbles to catch fish, rescues a sea lion, and puts his own spin on melodies sung by whales across the Pacific Ocean. This is the world in its natural state, defined by seasons, routines, and cycles. By the time this whale is ready to close one eye and go to sleep, you will be too.

In Embrace Discomfort, Michael Easter seeks out off-the-grid visionaries, disruptive genius researchers, and mind-body conditioning trailblazers who are unlocking the life-enhancing secrets of a counterintuitive solution: discomfort. Each of the 10 episodes except for the final one will feature an expert in a discomfort area, including ultra-runner Courtney Dauwalter, survivalist Laura Zerra, nutritionist Dr. Trevor Kashey, and fear expert Dr. Joseph E. LeDoux

Across the six lessons of Reconnect with Nature: Lessons from the Natural World, author and conservationist Jennifer Verdolin draws on Indigenous traditions and contemporary science to inspire you to integrate more of the natural world into your life, no matter where you live. You’ll learn about our deep biological need for nature and about the influence that natural environments and other animals have on your day-to-day life. You’ll also be provided with activities and tools to help you be more observant about the natural world around you.

In June of 1916, Albert Einstein published his ambitious paper proposing the existence of gravitational waves. In 2016, Einstein's 100-year-old theory was proven correct when scientists detected ripples in the fabric of space. Einstein and Relativity: A Conversation by Paul Rudd and Brian Greene celebrates this achievement, with Greene and Rudd sitting down to talk about string theory, relativity, and the discovery of gravitational waves.

Jon Hamm returns as intrepid private eye Jack Bergin in this thrilling, hard-boiled Audible Original series. Set against the backdrop of the real-life battle to bring the Brooklyn Dodgers to Los Angeles, Bergin investigates a brutal murder at the request of an old flame (Ana de la Reguera), and uncovers a deadly conspiracy to forcefully evict a Mexican-American community.

In the six lectures of Great Heroes and Heroines of Hawaiian Heritage, you will meet some of the key figures of Hawaiian history from the 19th and 20th centuries, a tumultuous period in Hawaii’s transformation from a secluded group of independent islands to the 50th US state and a bustling tourist destination. With Leilani Basham of the University of Hawai’i at Mānoa as your guide, you’ll be introduced to the political leaders, scholars, activists, and artists who have been integral to Hawaii’s story and the preservation of Hawaiian culture.

When struggling DJ Faith Adler comes to couch surf with her best friend Tori in NYC, she finds herself drawn into the world of Tori's eclectic friend group. Right from her chaotic first night, Faith's new friends take her under their wing and help her navigate the ups and downs of trying to make it as an artist in the big city. There's Tori, the bubbly one; Ginah, the high-strung but loyal one; Matt, the flirtatious one; and David, the cynical one.

BILLIONAIRE FOR SALE is a darkly comic romantic thriller about being held to ransom. By your family. By your marriage. By mysterious kidnappers who burst into your best friend’s villa and seize you at gunpoint. Tess realizes she’s made a mistake marrying billionaire Jeremy McCarthy, and questions her unfulfilling life with him. Just as she’s ready to leave her lavish life behind, masked gunmen crash into her world and kidnap her husband and three friends. Now, instead of walking away, Tess is pulled into a dangerous world of high-stakes negotiations and even higher personal stakes.

Final Thoughts: Jerry Springer tells the fascinating story of a Jewish refugee from Nazi Germany who became the beloved mayor of Cincinnati, Ohio before morphing into a symbol of cultural decline. Through dozens of intimate and revealing interviews with those who knew Springer best—from his big sister to his early political aides to the producers who shaped his show—listeners will be transported into the world of this singular figure’s rise to notoriety, and his fascinating struggle to reconcile his status as “the king of trash TV” with his lifelong dream of returning to politics.

Best-selling author, superstar physicist, and cofounder of the World Science Festival Brian Greene (The Elegant Universe, The Fabric of the Cosmos) and an ensemble cast led by award-winning actor Paul Rudd (Ant-Man) perform this dramatic story tracing Albert Einstein's discovery of the general theory of relativity.

Mark and Levi’s podcast takes a turn when a spaceship crashes in the backyard, and along with Levi’s older sister Brooke, they make contact with an extraterrestrial—a furry, purple creature they name Sky who was separated from the rest of her crew during an intergalactic mission. If she doesn’t make contact with them soon, she’ll never see her home again. Unfortunately, the kids aren’t the only ones who know about the alien’s arrival on Earth. A group of mysterious adults in black suits have begun following them. They’ve kidnapped Brooke’s boyfriend, Gavin, with Sky as ransom.

In the six lectures of The Great Gatsby at 100, you will join Sheila Liming of Champlain College to revisit the context and culture of the Roaring ‘20s, which inspired the story of the mysterious Jay Gatsby and his disastrous pursuit of Daisy Buchanan. As you’ll discover, while Gatsby is framed as a love story, it’s also a story of the American experience, revealing the unspoken rules of wealth and class and the false promises of self-made success in a world of Old Money privilege.

From Michael Peterson of TV’s Bones comes another twisted murder mystery that takes place in the small town of Jakob’s Point, where there are more members from the Witness Protection Program than anywhere else in America. When the Federal Marshal, the only person who knows the true identities of the residents of the town, turns up dead, and his records are destroyed, FBI Special Agent Alice Wheaton gets swept up in the investigation. In Jakob’s Point, where everyone is a witness, and everyone is a suspect, Alice must use her secret weapon – forensic listening – to find the killer.