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IDEAS is a place for people who like to think. If you value deep conversation and unexpected reveals, this show is for you. From the roots and rise of authoritarianism to near-death experiences to the history of toilets, no topic is off-limits. Hosted by Nahlah Ayed, we’re home to immersive documentaries and fascinating interviews with some of the most consequential thinkers of our time.

With an award-winning team, our podcast has proud roots in its 60-year history with CBC Radio, exploring the IDEAS that make us who we are. 

New episodes drop Monday through Friday at 5pm ET.

Ideas

If we weren't so used to having books, we would think of them as a "miracle." That's how historian Irene Vallego

views what she says is humankind's greatest and most influential invention: the book. "With their help, humanity has undergone an extraordinary acceleration of history, development, and progress," she tells host Nahlah Ayed. Vallego has traced written texts back to their earliest origins and she's written a book of her own, Papyrus: The Invention of Books in the Ancient World.

How the invention of the book shaped humanity

If you think you've never heard Jerry Granelli play drums — you likely have. Think of a comic strip holiday special and an iconic soundtrack: A Charlie Brown Christmas. Jerry was 22 years old when he became a member of the Vince Guaraldi Trio, the jazz band behind the popular 1965 album. His long career was legendary, accompanying many of the greats like Mose Alison, Sly Stone and The Grateful Dead. Producer Mary Lynk was lucky to meet with Jerry on the eve of his 80th birthday for a wide-ranging conversation. The gifted composer and jazz giant died in Halifax in 2021. *This episode originally aired on December 21, 2020.

Jazz fan or not, you've probably heard this musician play

Handel’s Messiah is one of the best-loved pieces of Christmas music. Only it was meant for Easter. But it draws on far more from the Old Testament than the New. There are more surprising facts about this 18th-century masterpiece that IDEAS explores with Ivars Taurins, founding director of the Tafelmusik Chamber Choir who has conducted Messiah over 200 times, and veteran CBC Radio broadcaster Robert Harris. In nine movements, they reveal the hidden treasures of Handel’s celebrated work. *This episode originally aired in 2015.

Revealing facts about the Christmas song meant for Easter

The nativity story that Christians believe is that God took the form of a baby named Jesus who was born to save the world and bring about an enduring peace. So what happened? Did we miss it? And what happens next? These are questions Trappist monk Thomas Merton grappled with in his own meditation on the Christmas story. His version "The Time of The End is the Time of No Room" was published in 1966. At the time he called it a sober statement about the climate of our time, a time of finality and fulfillment.

An apocalyptic retelling of the Christmas story

In an era of political polarization and fatigue from ongoing crises, hope is critical. But it's not something you have; it's something you do, argues education scholar Kari Grain. "Critical hope" in action is not just the belief that transformation is possible — it's necessary. In her book, she explores seven principles for practicing hope that confront toxic positivity, social injustices, and gives anger and grief a seat at the table.

Kari Grain is a professor at the University of British Columbia in the Faculty of Education, where she leads the Masters program in Adult Learning and Global Change Program. She delivered the University of Prince Edward Island’s 2025 Shannon K Murray Lecture on Hope and the Academy.

Where to find 'critical hope' in hard times

Indigenous math isn't just about numbers and equations, it involves culture, spirituality and more. Math professor Edward Doolittle, a Mohawk from Six Nations in Ontario, sees math as something embedded in Creation itself. In his Hagey Lecture at the University of Waterloo, he describes Indigenous mathematics as being grounded in cognition, emotion, the physical world and community. Indigenizing math, Doolittle hopes, will make it more approachable and meaningful to Indigenous students — show them how entwined it is with everyday life and something much bigger than ourselves.

Why spirituality is central to Indigenous mathematics

"We are the monsters" — that's the premise for the genre of film known as body horror — movies that fixate on monstrous and grotesque changes to the body. There have been good body horror films and bad ones, but "The Fly" starring Jeff Goldblum and Geena Davis was perhaps the most consequential. The movie captured anxieties around bodily autonomy and physical decay, just as the AIDS epidemic was becoming catastrophic. Forty years later, Body Horror is back with films like "The Substance" and "Together." Producer Matthew Lazin-Ryder examines what these films reveal about our bodies, our minds and our sense of who we are.

How 'body horror' helps us confront the fears within us

In 2024, 'polarization' was Merriam-Webster's word of the year. That division still grows, making it increasingly difficult to connect to one another. But there are people having important conversations and they have advice for us all. From fighting for LGBTQ+ rights in Colombia, championing human rights in Southern Africa and working for a two-state solution post Oct. 7, the winners of the The Global Centre for Pluralism awards tell host Nahlah Ayed about how minds can and do change, and why we need to not only talk, but listen.

How to change minds and find common ground

The yellow traffic light is a perfect example of imperfection — with intention. While driving you have to think fast. Do you speed up or stop, whether that means easily or slamming on the brakes? Every driver has their answer and what lies in the middle is a vast perceptual field. A great deal of thought has gone into the engineering of the ambiguous yellow light, as IDEAS producer Seán Foley found out. He had his own encounter with what he was sure was the shortest yellow light in the world. It resulted in a traffic fine, and gave voice to so many questions.

Why yellow traffic lights were designed to be ambiguous

Tech billionaires are on a mission to make the stories of science fiction a reality: space colonization, human/machine bio organisms, and living forever in a state of unhindered bliss. This version of a far future utopia may come of as a "billionaire boys and their toys" but experts warn such a dismissive attitude is naïve and dangerous. *This episode originally aired on Jan. 22, 2025.

The 'dangerous' promise of a techno-utopian future

Growing up with food insecurity, Julian Napoleon yearned to be a farmer. His great-grandparents once farmed on the Saulteau First Nations reserve in northeastern B.C. Over the decades, the farm was replaced by the bush, and the ideas of communal, seasonal living started to fade away. Five years ago, Julian moved to Amisk Farm to bring it back to life. This year the farm has produced food for over 300 Indigenous households, free of cost.

IDEAS visits Amisk Farm to learn about rural food security, Indigenous food sovereignty, farming in the north, and what it means to come home and grow a new home in a radically transformed landscape.

Bringing a farm — and its philosophy — back to life

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