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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

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

This isn't a wrap or best of 2025 kind of list. This IDEAS podcast is packed full of all kinds of recommendations from our smart, insightful contributors. We asked them to suggest a work of nonfiction that recently made them think — maybe even think differently — about a particular topic. Their answers cover several genres and varied subjects. Some may surprise you.

Don't worry about writing any titles or names down, we have that covered on our website. The online list also includes a bonus: added recommendations from IDEAS producers. Enjoy!

Open your gift: a podcast of nonfiction recommendations

In fact, author and journalist Marcello Di Cintio argues Canadians are complicit. After four years investigating the lives of migrant workers, he found that many temporary foreign workers are trapped working in precarious, exploitative conditions. These jobs are essential to our economy and society, yet invisible. Each migrant worker has a story to tell, says Di Cintio. He joined IDEAS host Nahlah Ayed on a visit through the tomato capital of Canada to hear their stories and talk about what his investigation reveals about Canada.

Marcello Di Cintio's book is called Precarious: The Lives of Migrant Workers.

Your tomatoes have a backstory and it’s not always pretty

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

There’s a constant mantra Frank Gehry would always hear from his mentors who have since died – “Don’t you dare ever stop working.” It’s a sentiment he lived by right until his death at 96. In fact his last major cultural building, the Guggenheim Abu Dhabi, will open in 2026. So how does his fierce, creative drive square with his mortality?

In an expansive conversation from 2017 with IDEAS producer Mary Lynk, Gehry shares his thoughts about death and his life, from growing up Jewish in Toronto, to his complicated relationship with his father, to his move to L.A. at 18, to how his career flourished. *This is the second episode in a two-part series.

Listen to Part One: The architecture that brought Frank Gehry to tears

Pt 2 | Architect Frank Gehry on how to exit life

Rebel architect Frank Gehry believed architecture IS art. He strived to evoke emotion in every design. Last Friday, Gehry died at 96 but he never stopped creating. In 2017, IDEAS producer Mary Lynk had a rare opportunity to spend two days with Gehry at his LA studio. Their wide-ranging conversation covers many aspects of his life and career, including a moment at 40 when the sight of an ancient piece of art from 500 BC led him to weep. "I think if you went and looked at it, you would cry too," he told Lynk.

*This conversation is a two-part series that delves into Frank Gehry's infusion of humanity into his designs.

Listen to Part Two: Architect Frank Gehry on how to exit life

Pt 1 | The architecture that brought Frank Gehry to tears

The Gulf of America/Gulf of Mexico controversy reminds us that maps may appear authoritative, but are a version of reality. At the same time, they can be rich, beautiful and informative, as Vancouver’s Kathleen Flaherty explains, in this 2005 documentary made before Google Maps changed mapmaking forever.

Why world maps illustrate an artificial reality

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