Ideas

Ideas

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.

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Resumen del episodio

This episode explores the unsustainable nature of the modern global food system, examining how industrial agriculture and the rise of ultra-processed foods drive biodiversity loss, environmental degradation, and global health crises. The discussion highlights how corporate interests and political deregulation have prioritized profit and convenience over nutrition and traditional culinary heritages. The conversation also investigates potential solutions, ranging from technological innovations like lab-grown meat and plant-based alternatives to a return to flavor-focused, regenerative agriculture. While debating the tension between industrial efficiency and artisanal sustainability, the episode concludes that solving the climate and nutritional crises may be possible by bridging the investment gap in organic R&D and prioritizing food quality.

Capítulos

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Destacados

It is the leading cause of early death on planet Earth ahead of cigarette smoking.

00:02:30 · This highlights the severe health impact of poor diets compared to other major health risks.

Grunwald tells me something I really didn't want to hear, that pound for pound, beef emits 50 times more emissions than coal.

00:04:32 · The speaker presents a startling comparison between the carbon footprint of beef and fossil fuels.

And baked into the definition are some crucial concepts that this is food made for profit. It's made to be convenient and it's made to be marketed. And it's made by big corporations.

00:17:18 · The speaker defines the core characteristics of ultra-processed foods as being driven by corporate profit and marketing rather than nutrition.

It was an incredible technological achievement to make meat out of plants that was 80% as tasty as the real thing and maybe only 50% more expensive. But that wasn't really a business model, right?

00:38:20 · The speaker explains why plant-based meat failed to disrupt the industry despite its technological success.

We could either eat sustainably or we could eat well. But I now think that's a false binary.

00:53:18 · The speaker suggests that the choice between environmental sustainability and nutritional quality is not mutually exclusive.

Episodios

2096-

What's for dinner in 2050?

This episode explores the unsustainable nature of the modern global food system, examining how industrial agriculture and the rise of ultra-processed foods drive biodiversity loss, environmental degradation, and global health crises. The discussion highlights how corporate interests and political deregulation have prioritized profit and convenience over nutrition and traditional culinary heritages. The conversation also investigates potential solutions, ranging from technological innovations like lab-grown meat and plant-based alternatives to a return to flavor-focused, regenerative agriculture. While debating the tension between industrial efficiency and artisanal sustainability, the episode concludes that solving the climate and nutritional crises may be possible by bridging the investment gap in organic R&D and prioritizing food quality.

26 oct. 2026
2095-

How the Humanities can pull down the screens between us

In 'The Screen Between Us,' Professor Kim Nelson explores how screen culture and AI threaten human connection and the humanities. Using historical parallels from early cinema to Socrates' critiques of writing, she argues that modern technology risks severing our engagement with the real world and each other. The episode further examines the vital importance of dialectical exchange and human connection in an era dominated by algorithms. The discussion highlights the necessity of fostering real-world solidarity, empathy, and intellectual effort to counter digital alienation and the rise of polarizing content.

23 oct. 2026
2094-

AI as the new Delphic Oracle?

This episode explores the historical and mythological significance of Delphi, an ancient Greek sanctuary that served as the 'center of the world.' It details the role of the Pythian priestess in delivering Apollo's prophecies and examines how the site acted as an ancient information hub through the interpretation of ambiguous oracular messages. The discussion traces the transition from ancient oracles to modern predictive technologies like AI, highlighting how humans use prediction as a tool for power and to alleviate anxiety. The episode concludes by reflecting on Delphic maxims such as 'Know Thyself' as guides for navigating uncertainty without falling into hubris or fatalism.

22 oct. 2026
2093-

The 2,000-year-old travel list to complete before you die

In this episode of Ideas, host Nala Ayyad interviews historian Bettany Hughes about the ancient seven wonders of the world and the human drive for wonder. The conversation explores the historical significance of these monuments, the symbolic power of the number seven, and a detailed look at the construction and environment of the Great Pyramid of Giza. The discussion further examines archaeological discoveries at Wadi al-Jaf, the true purpose of pyramids as 'places of ascension,' and the mystery surrounding the Hanging Gardens of Babylon. Hughes reflects on how these structures expressed power and sacredness, concluding with a meditation on how wonder serves as a catalyst for human connection and hope across millennia.

21 oct. 2026
2092-

How the Moon shaped humanity — and defined life on Earth

This episode explores the profound physical, biological, and evolutionary impact of the moon on Earth, from its origin via the giant-impact hypothesis to its role in stabilizing Earth's climate and driving life from water to land. The discussion traces how the moon's gravitational influence shaped human civilization through lunar calendars and timekeeping. Furthermore, the episode examines the evolving human perception of the moon, moving from ancient mythological views to the scientific revolutions sparked by Galileo and Copernicus. Through accounts of the Apollo missions and astronaut Charlie Duke, the narrative explores how lunar exploration transformed the moon from a mysterious orb into a physical world, ultimately redirecting our reverence toward the fragility and interconnectedness of Earth itself.

19 oct. 2026