There are 19 centibillionaires and a growing list of 3,000 billionaires worldwide. So it might not surprise you that the richest one per cent possesses nearly half of the world’s wealth. History has never seen such an extreme concentration of wealth. Some economists argue the battle of the 21st century is between oligarchy and democracy. How did we get here? IDEAS begins a four-part documentary series The Billionaire Age.

Earthworms are supposed to be a sign of healthy soil. But they're actually an invasive species that can even damage forests. So have we been sold a lie about worms and soil? Not exactly. The relationship between the two depends on the context. And the way we garden — or farm — can make all the difference. IDEAS producer Annie Bender unearths the complicated truth about the not-so lowly earthworm.

Guests in this episode:

Joshua Steckley is a political ecologist, postdoctoral fellow at Carleton University and the author of The Nightcrawlers: A Story of Worms, Cows, and Cash in the Underground Bait Industry.

Peter Groffman is a professor at the City University of New York Advanced Science Research Center and Brooklyn College, with research interests in ecosystem, soil, landscape and microbial ecology, with a focus on carbon and nitrogen dynamics.

Mike McTavish is a conservation scientist at a rare Charitable Research Reserve in Cambridge, Ontario.

Janet Browne is a historian of science and Darwin biographer, author of a two-volume set called Darwin: A Biography.

In more than 40 years on the front lines of international human rights Alex Neve has heard Canada described as ‘the land of human rights’ — and seen the profound ways Canada has failed to uphold universal human rights, both at home and abroad. In his final Massey Lecture, he lays out his vision for a way forward.

The bombing of civilians has been called one of the "great scandals" of modern warfare. So why, despite nearly a century of drafting laws and signing conventions protecting the sanctity of human life, does bombing civilians remain a widespread military tactic? IDEAS producer Naheed Mustafa looks at a century of bombing civilians to try and answer that very question.

Guests in this episode:

Yuki Tanaka is a historian and emeritus research professor of history at the Hiroshima Peace Institute.

Mark Selden is senior research associate in the East Asia program at Cornell University, and the founder of Asia-Pacific Journal.

Azmat Khan is a professor of journalism at Columbia University and an investigative journalist with the New York Times.

"Our democracy is what’s at stake," says Karen Hao, an engineer who used to work in Silicon Valley. Now she’s an outspoken critic of its AI giants. The investigative journalist argues AI companies run their businesses like empires and it has to stop. In her 2025 bestseller, Empire of AI, Hao digs into the global impact of Big AI and explores how we need to rethink AI to build a better future. This podcast includes a lecture by Karen Hao and a discussion with host Nahlah Ayed.

Fact and fiction may seem poles apart but writers Esi Edugyan and Tiya Miles find the two intertwine perfectly in their award-winning storytelling. Both authors try to imagine past lives in their work, in part so that we may reimagine our own. They may operate in different realms but what they share is the telling of profoundly important stories that would otherwise go untold. It's been a longtime goal for IDEAS to bring these two accomplished authors together for a discussion — and it was worth the wait.

This podcast was recorded in front of an audience in January 2026 at a Toronto Public Library event.

Poetry can find you when you need it most. It can be life-altering to read that poem just at the right moment. It was for six IDEAS producers who join Nahlah Ayed in studio to share poems they return to, year after year.

This special episode is to mark UNESCO's World Poetry Day, March 21st.

Eleanor Roosevelt once said that universal human rights begin in “small places, close to home — so close and so small that they cannot be seen on any map of the world.” In his fourth Massey Lecture, Alex Neve reflects on moments when people power won the day.

*Read this article to learn about the "most powerful" moment in Alex Neve's 40-year-career.