Radiolab is on a curiosity bender. We ask deep questions and use investigative journalism to get the answers. A given episode might whirl you through science, legal history, and into the home of someone halfway across the world. The show is known for innovative sound design, smashing information into music. It is hosted by Lulu Miller and Latif Nasser.

In this intensely divided moment, one of the few things everyone still seems to agree on is Dolly Parton—but why? That simple question leads to a deeply personal, historical, and musical rethinking of one of America’s great icons. Join us for a 9-episode journey into the Dollyverse. Hosted by Jad Abumrad. Produced and reported by Shima Oliaee. Dolly Parton’s America is a production from OSM Audio and WNYC Studios.

Welcome, nature lovers, to the home of the Terrestrials podcast and family-friendly Radiolab episodes about nature. Every other week, host Lulu Miller will take you on a nature walk to encounter a plant or animal behaving in ways that will surprise you. Squirrels that can regrow their brains, octopuses that can outsmart their human captors, honeybees that can predict the future. You don’t have to be a kid to listen, just someone who likes to see the world anew. You’ll hear a range of nature stories on this podcast. Sometimes these will be brand new Terrestrials episodes, full of original songs (by “The Songbud” Alan Goffinski) that tell a fantastical-sounding story about nature that is 100% true. Sometimes these will be our very best, shiniest, furriest, leafiest Radiolab episodes about animals or plants or nature. The stories that drop here will always be family-friendly and safe for kids. They will always be sound-rich and full of the vivid, gripping storytelling you’ve come to expect from Radiolab. They will always transport you to the beyond-human world: into the depths of the ocean, into jungles, prairies, forests, space, snow, wildflower fields and beyond. Sometimes we’ll encounter something so wild we just have to break out into song about it! Don’t worry, good voices not required. Join us on this adventure!

The episodes from this mini-series can be accessed in the Radiolab podcast feed and radiolab.org for free, or access the ad-free versions here when you become a Radiolab+ subscriber. Radiolab Presents: G is a multi-episode exploration of one of the most dangerous ideas of the past century: the concept of intelligence. In six episodes, the series unearths the fraught history (and present-day use) of IQ tests, digs into the bizarre tale of one man’s obsessive quest to find the secret to genius in Einstein’s brain, reveals the ways the dark history of eugenics have crept up into the present, looks to the future with a controversial geneticist who has created a prenatal test for intelligence, and stages a raucous game-show throwdown to crown the smartest animal in the world.

Radiolab reporter Latif Nasser always believed his name was uniquely his own. Until he makes a shocking discovery that he shares his name with another man: Detainee 244 at Guantanamo Bay. The U.S. government paints a terrifying picture of The Other Latif as Al-Qaeda’s top explosives expert, and an advisor to Osama bin Laden. Nasser’s lawyer claims that he was at the wrong place at the wrong time, and that he was never even in Al-Qaeda. This clash leads Radiolab’s Latif into a years-long investigation, trying to uncover what this man actually did or didn’t do. Along the way, Radiolab’s Latif reflects on American values and his own religious past, and wonders how his namesake, a fellow nerdy, suburban Muslim kid, traveled such a strikingly different path.

The episodes from this mini-series can be accessed in the Radiolab podcast feed and radiolab.org for free, or access the ad-free versions here when you become a Radiolab+ subscriber. Radiolab Presents: Gonads is a multi-episode journey deep into the parts of us that let us make more of us. Longtime staff producer and host Molly Webster explores the primordial roots of our drive to reproduce, introduces a revolutionary fertility procedure that sounds like science fiction, reveals a profound secret about gender that lives inside all of us, and calls on writers, educators, musicians, artists and comedians to debate how we’re supposed to talk to kids about sex.