CBC Discover & Learn

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Stanica • Relácie: 21

Spoločnosť a kultúra

Spoločnosť a kultúra

Denne
História

História

Aktuálne 08. 10. 2025
Vedy o Zemi

Vedy o Zemi

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Správy

Správy

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Obchod

Obchod

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Spoločnosť a kultúra

Spoločnosť a kultúra

Aktuálne 16. 05. 2024
Veda

Veda

Aktuálne 22. 04. 2024

28. 11. 2025

The environmental costs of nation-building, and more…

On this week’s episode: a mini tyrannosaur is a new species, ants redesign to avoid illness, toxic lead gave humans the edge over Neanderthals, invasive fish are evolving to avoid eradication attempts, and how big mining projects — and attempts to hurry them along — can spell bad news for the environment.

28. 11. 2025

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54 min
1. 5.

Cocaine in waterways makes salmon roam further, and more…

Cocaine and many other chemicals and drugs are found in many waterways, but especially around wastewater treatment plants. Scientists exposed wild juvenile Atlantic salmon to cocaine and its byproduct to see how it impacted their behaviour in the wild. As a result, the fish swam twice as far, which could put them in more danger.

1. 5.

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54 min
24. 4.

Seabird poop does whaaat? And more…

Seabird poop plays a surprising role in bringing life to barren islands, spreading nutrients throughout the ocean, and even creating wealth for an ancient human empire. PLUS: The precursors of written language go back a lot earlier than we thoughtDolphins exposed to the Deepwater Horizon oil spill also more likely to be hit by boatsFrom the archives: Canadian astronomer spots a supernova visible to the naked eyeQuirks Question: How do beavers choose their trees?Mapping the universe in three dimensions

24. 4.

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54 min
1. 2.

Is AI a Powerful Tool, or a Growing Risk?

From connecting with customer service online, or asking for health advice, chances are you've already been interacting with an AI chat bot. AI is everywhere, helping us save time, learn new things, and juggle daily tasks, while also raising serious concerns about jobs, education, and trust. As companies like Amazon invest billions in generative AI, and cutting thousands of jobs. How are you using AI? Is AI making our lives better or worse?

1. 2.

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54 min
27. 3.

Dogs have been by our side for 16,000 years, and more...

New research confirms that dogs were the first animal to form a domestic relationship with humans, dating back to the end of the last Ice Age almost 16,000 years ago. PLUS: Constructing shelters out of Martian soil may be possible with bacterial helpMale-on-male cricket 'twerking' and 'booty bumping' is not a case of mistaken identityNarrowing down potential alien signals from 12 billion to 100, thanks to SETI Researchers find a brain switch in mice to turn a deadbeat dad into a doting one

27. 3.

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54 min
3. 4.

What we hope to see on the far side of the moon, and more…

On their mission around the moon, Jeremy Hansen and his crewmates will become the only four people on Earth to ever lay eyes on the entire far side of the moon. Since joining the space program, the Artemis astronauts have been undergoing intensive geological training to help train their eyes to look for lunar features that satellites can't pick up. PLUS: How Neanderthals skillfully hunted and butchered a giant elephantFilming fish over their lifetime reveals behaviours that lead to longevityHow our food environment shapes our tastes — and health

3. 4.

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54 min
24. 2.

What will happen to us when the internet dies?

And it is dying. At least for us, humans. Our chatter and connection online is being overrun by bots — more than half of online activity is non-human. The internet is on it's way to feeling haunted, like a deserted mall where the fountain is still gurgling, the canned music is still playing, but the people are nowhere to be found. IDEAS explores the dying internet and what we will do when it's dead? If you like this episode, you may want to listen to: We're not machines. Why should our online world define life? Guests in this episode: Cory Doctorow is an activist with a non-profit called the Electronic Frontier Foundation. He's a writer and journalist. His most recent book is called Enshitification: Why Everything Suddenly Got Worse And What To Do About It Matt Hussey is a UK-based therapist and tech journalist.

24. 2.

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54 min
11. 3.

How anxiety over today's democracy is political

Anxiety is an inescapable, fundamental human reaction to an unpredictable future. This is the philosophy of Thomas Hobbes, a curmudgeon of the 17th century who believed that without a powerful, sovereign government life would be "nasty, brutish and short." Politics and uncertainty go hand in hand. In this podcast, IDEAS explores how a new take on Hobbes on the topic of anxiety offers a surprising perspective on American politics and democracy. For worried politicos today his way of thinking offers valuable lessons. *This episode originally aired on Jan. 13, 2025. Guests in this podcast: Vertika is a political science PhD student at McGill University. Kinch Hoekstra is a professor of political science and law at the University of California, Berkeley, and the co-editor of The Oxford Handbook of Hobbes. Bethany Albertson is an associate professor of political science at the University of Texas at Austin, and the co-author of Anxious Politics: Democratic Citizenship in a Threatening World. Shana Gadarian is a professor of political science and associate dean for research at the Maxwell School at Syracuse University.

11. 3.

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54 min
6. 3.

Filming a black hole in action, and more…

You may have seen Black Hole, the image, but have you heard of the upcoming Black Hole, The Movie? This week, astronomers launched a new campaign to capture video footage of the supermassive black hole pulsing at the heart of the M87 galaxy. PLUS: Sunlight and fungi inspiration can help recycle plastic waste into vinegarAncient kangaroos were hopping giantsHow monogamy helps termite colonies number in the millionsOur infant universe's primordial soup was soupy, according to new study

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54 min
10. 4.

Moving beyond animal testing, and more…

There's been a growing movement to develop new technologies to replace at least some of the animals used in scientific research. Researchers across Canada are working to create these tools, to usher in a new animal-free era for medical science. PLUS: Harbor seals can 'talk' thanks to their parrot-like brains'Flaming hot' water ice may explain Neptune and Uranus' strange magnetismA thigh bone that could represent the oldest evidence of our human lineageThe ravens of Yellowstone remember where wolves typically kill their prey

10. 4.

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54 min

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