CBC Discover & Learn

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Kanal • 20 serier

Geovidenskab

Geovidenskab

Ugentligt
Nyheder

Nyheder

Ugentligt
Samfund og kultur

Samfund og kultur

Dagligt
Erhverv

Erhverv

Ugentligt
Nyheder

Nyheder

Ugentligt
Historie

Historie

02.04.2025
Nyheder

Nyheder

Ugentligt

3 DAGE SIDEN

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?

3 dage siden

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54 min.
30. JAN.

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. jan.

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54 min.
2. FEB.

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. feb.

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55 min.
4 DAGE SIDEN

Moltbook, a new social network for AI agents causes bot existentialism and human panic

Bots get a social media platform of their own and humans get a glimpse of what they'd talk about if left (mostly) unprompted. PLUS: Bad Bunny's very good week Can Quebec be a roadmap for Alberta’s independence movement? What delays in Ottawa mean for pending wrongful conviction cases Crystal Shawanda's challenging road to her latest Juno nomination Riffed from the Headlines, our weekly musical news quiz.

4 dage siden

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54 min.
4 DAGE SIDEN

Following the wisdom of water to remake an unravelling world

Water has been "a powerful teacher" for Nishnaabeg scholar Leanne Betasamosake Simpson, a member of Alderville First Nation north of Lake Ontario. With so much uncertainty about the kind of world that’s taking shape, her award-winning book Theory of Water draws on Anishinaabe creation story, Indigenous ethics of relationality and reciprocity, and the wisdom of water to chart a course for remaking a better, more sustainable and just world. Simpson's Theory of Water: Nishnaabe Maps to the Times Ahead won the Hilary Weston Writers’ Trust Prize for Non-Fiction in 2025.

4 dage siden

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55 min.
6 DAGE SIDEN

How to develop 'in the zone' hyper focus

You've likely experienced it: that state of being in the groove, on a roll, lost in the process. It's what researchers call 'flow': a state intimately familiar to athletes and artists — or anyone who's been fully absorbed in a given task to the point where time seems to stand still. In this state there's a sense of self disappearing, presenting a paradox between a state in which you lose yourself, yet become yourself. Writer and triathlete, Suzanne Zelazo, delves into the mystery at the heart of flow in this documentary. *This episode originally aired on June 25, 2021.

6 dage siden

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55 min.
19.09.2025

Understanding our inner light, and more...

Dust from car tires can be bad for fish — what might it do to us? As car tires wear, they shed billions of ultrafine particles of rubber that contain a complex mix of chemicals, including one called 6PPD-Quinone that’s been linked to mass die-offs of migrating salmon. Now researchers are sounding the alarm that this chemical is accumulating in humans, and we have no clear understanding of its toxicity. An international team of scientists, including Rachel Scholes from the University of British Columbia, are calling for more scrutiny of the chemicals that go into car tires, since so much ends up in our environment. Their paper was published in the journal Environmental Science & Technology Letters. Fecal Transplants seem to have lasting metabolic effects Transplanting the gut microbiome has been held out as a hope for a range of disorders, from obesity to mental health issues. A study that followed obese adolescents four years after receiving a fecal microbiota transplant from healthy individuals has shown positive impacts on the recipients' weight and metabolic health. Dr. Wayne Cutfield, a pediatrician and professor of pediatric endocrinology at the University of Auckland in New Zealand, said they also found after all this time that the donor bacteria have remained established in the recipients' gut microbiome. The study is in the journal Nature Communications. An ant queen clones sexual slaves of another species for her daughters In a truly bizarre tale from the animal world, researchers have discovered a species of ant where the queen gives birth to males of two totally different species. Somewhere along their evolutionary path, these Messor ibericus queen ants in southern Europe developed an ability to clone male Messor structor ants for her daughters to mate with and to produce a hybrid working class. Jonathan Romiguier, an evolutionary biologist from the University of Montpellier in France, said these M. ibericus ants essentially domesticated ants of another species. The study was published in the journal Nature. Why other apes can’t walk a mile in our shoes A feature that distinguishes humans from other primates is the ability to walk upright. The major evolutionary change in the structure of our pelvis that allows for our bipedalism has now been traced genetically and developmentally. Human pelvic blades initially form in the embryo like other primates, but then flip their growth from vertical to horizontal, to give the human pelvis its unique basin shape. This new research led by Terence Capellini, Chair of the human evolutionary biology department at Harvard University and postdoctoral student Gayani Senevirathne, was published in the journal Nature. Women glow. So do men. Understanding our 'inner light' You might have been told by an admirer that you have a unique glow. In two groundbreaking studies, researchers have demonstrated the reality of that poetic compliment. Using ultra-sensitive instruments capable of detecting individual photons, Canadian researchers have imaged a biological source of incredibly faint light, known as Ultraweak Photon Emissions (UPE), that has potential as a future non-invasive diagnostic imaging tool. Daniel Oblak, an associate professor of physics and astronomy at the University of Calgary, oversaw a study where they unequivocally demonstrated that living things, like mice, give off an extremely faint glow that dims when they die. His study was published in The Journal of Physical Chemistry Letters. In a separate study, Nirosha Murugan, — an assistant professor of tissue biophysics at Wilfred Laurier University — discovered that these UPEs can also detect different mental states in the brain. That study was published in the journal iScience.

19.09.2025

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54 min.
02.04.2025

Recall Introduces | Aftermath: Hunt for the Anthrax Killer

In the wake of 9/11, anthrax-laced letters unleashed a new wave of terror across the nation. But who was behind the attacks — and why has America nearly forgotten this story? As government buildings shut down and law enforcement scrambled to track the perpetrator, the FBI launched one of the largest and most complex investigations in its history. Untangling a web of scientific evidence and false leads, the case took unexpected turns with lasting consequences. From Wolf Entertainment, USG Audio, Dig Studios and CBC, this eight-part series grants unprecedented access to declassified materials and firsthand accounts, revealing how the anthrax attacks reshaped America—and the hidden impact that still lingers today. More episodes of Aftermath: Hunt for the Anthrax Killer are available at: https://link.mgln.ai/bD1pJZ

02.04.2025

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38 min.
16.06.2025

The making of an ‘authoritarian personality’

A groundbreaking study conducted in the wake of the Second World War by a group of scholars rocked the academic world when it was published in 1950 — but fell out of favour. Now a new generation of scholars is reviving the lessons of The Authoritarian Personality to understand who is drawn in by fascist propaganda.

16.06.2025

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54 min.
29. JAN.

PT 1 | An injustice system where 'you can buy your way out'

Marcell Wilson knows how to game the criminal justice system. He's been charged upwards of 30 times for what he says were “mostly violent crimes" and yet to this day he doesn't have a criminal record. Why? He has money to pay the high fees for a good lawyer. Many scholars and legal commentators agree it’s easier for people with wealth to secure favourable legal outcomes — not just in criminal court but in custody disputes, civil litigation, and child protection matters. In a two-part series, IDEAS contributor Mitchell Stuart asks: is a system like that still capable of administering justice? *This episode originally aired on April 19, 2023.

29. jan.

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55 min.

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