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Chaîne • 21 émissions

Culture et société

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Sciences de la Terre

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11/07/2023
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Culture et société

Culture et société

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Sciences

Sciences

22/04/2024

-3 J

How a natural catastrophe 8,000 years ago may have fueled Brexit

For the first two billion years, the Earth didn't have oxygen. That's just one of the many fascinating details Peter Frankopan reveals in his book, Earth Transformed: An Untold History. The Oxford professor of global history takes us on a multi-million year tour, illustrating the breathtaking ways climate has shaped the Earth and human civilization. How the collapse of a sediment shelf 8,000 years ago isolated what's now Britain from Europe, and its potential influence on the Brexit vote in 2016. Or how climate fluctuations correlate to periods of antisemitic violence. There's a lot to learn in this podcast. Have a listen.

-3 j

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55 min
2 FÉVR.

Flexing Canada's 'soft power' could help shift geopolitics

"We are in the midst of a rupture, not a transition," Canada's Prime Minster Mark Carney said in a recent speech at the World Economic Forum. The shift in international relations has Carney urging middle power countries to build coalitions and act together to counteract the great power strategy of the day: coercion. How? By flexing our "soft power" — assets a country has that appeal to other countries in international affairs. As it turns out, Canada and a majority of other countries have an opportunity to play a significant role on the international stage, if they choose to take it. This IDEAS episode is a discussion with Jennifer Welsh, McGill University’s Canada Research Chair in Global Governance and Security, moderated by Nahlah Ayed, at the University of Ottawa in the fall of 2025. We also hear from former high commissioner to Britain Janice Charette, former head of MSF Dr. Joanne Liu and climate campaigner Catherine Abreu.

2 févr.

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55 min
27 JANV.

Why AI needs limits so humans can flourish

"You're awakening a dragon. Public anger is stirring." A warning from Rutger Bregman to Silicon Valley. The historian is sounding the alarm over the existential risks posed by unrestrained technology and artificial intelligence in his final BBC Reith Lecture. He calls on those in power to assume responsibility, and help shape a future worthy of hope. Bregman envisions 'moral revolutions' as the path forward and urges us all to come together to take on this task. "Small groups of committed citizens have bent the arc of history towards justice. And whatever the outcome, there is beauty in trying, beauty in every act of courage, in every spark of truth."

27 janv.

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55 min
-6 J

Belugas swap mates for survival, and more…

Researchers made the surprising discovery that Alaska beluga whales have swinging sex lives — and that could be their key to survival in the warming Arctic. Plus: mission to the 'doomsday' Thwaites glacier in Antarctica ends in disappointment near-infrared light therapy offers hope to football players with brain injuries with nuclear power making a comeback, what's changed since the last Atomic Age?

-6 j

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54 min
-6 J

What more could Canada do to boost EV sales? Ask Norway!

Nearly 100 per cent of Norway’s new car sales last year were electric. That was achieved without a ban on gas-powered vehicles. As Canada scraps its EV mandate, it may want to bolster incentives and policy to be more like Norway. Plus, Chinese brand EVs are coming to Canada and potentially shifting the market into a different gear.

-6 j

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26 min
23 JANV.

How Britain caused Ireland's Great Famine

The potato and the Irish Famine of 1845 will forever be linked. But what's often overlooked is how deeply connected the potato was to British colonial policies during that time. To Britain it was a symbol of Irish backwardness. In the book Rot, a new history of Ireland's Great Famine is revealed, showing how the British Empire caused the infamous disaster. Author and historian Padraic X Scanlan paints a complex and compelling picture of the Irish Famine of 1845, in which the potato — and the blight — played but a part in a broader story of colonialism, capitalism, and collapse.

23 janv.

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55 min
4 FÉVR.

Why the Monroe Doctrine has world leaders on edge

Firstly, you might ask: What is the Monroe Doctrine? It's a U.S. policy created in the 19th century that opposes foreign interference in the affairs of the "Western Hemisphere." It was understood to be a defense of autonomy but its interpretation is mixed. Various presidents over time have used the doctrine for their own purposes, writing their own political agenda onto it. Now is no different, as Donald Trump's government turns to the policy as a way to control the Western Hemisphere. Guests in this episode: Richard Drake is the Lucile Speer Research Chair in politics and history at the University of Montana Max Cameron teaches in the department of political science at the University of British Columbia and is president of the Latin American Studies Association

4 févr.

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55 min
30 JANV.

Polar bears are thriving in Svalbard, and more...

Scientists spent nearly 25 years studying close to 800 polar bears in the Barents Sea region and discovered that those polar bears seem to be doing just fine, even though melting sea ice is also a major issue. PLUS: Sargassum seaweed is becoming such a problem, you can see it from spaceWhy some people only get mild sniffles with a cold and others get sickA woolly rhino's DNA found in an ancient wolf’s stomach reveals their quick demiseHow to change a memory — one scientist's quest to understand memory permanence

30 janv.

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54 min
30 JANV.

PT 2 | An injustice system where 'you can buy your way out'

Our justice system was developed under the assumption that both parties in a dispute would each have a lawyer. But the reality is most Canadian's can't afford a lawyer — which makes negotiations unequal. In some jurisdictions as many as 80% of people in family court are self represented. What about legal aid? Very few people are eligible. Our series continues to explore how the justice system is designed to favour people with money. *This episode originally aired on April 26, 2023.

30 janv.

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55 min
31/08/2025

Donald Trump's whirlwind summer, Device design and dependence, Carbon dioxide, Loretta Ross

Guest host David Common speaks with The Atlantic staff writer Toluse "Tolu" Olorunnipa and New York Times White House correspondent Luke Broadwater about the enduring effects of Donald Trump's whirlwind summer, assistant professor of communications studies at Concordia University Stephen Monteiro breaks down how our devices evolved to make us more dependent on them, science journalist Peter Brannen enriches our understanding of carbon dioxide, and activist Loretta Ross reflects on her social justice journey. Discover more at https://www.cbc.ca/sunday

31/08/2025

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1 h 34 min

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