CBC Discover & Learn

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Canal • 20 programas

Sociedad y cultura

Sociedad y cultura

Cada día
Ciencias de la Tierra

Ciencias de la Tierra

Cada semana
Historia

Historia

8 oct
Noticias

Noticias

Cada semana
Sociedad y cultura

Sociedad y cultura

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Economía y empresa

Economía y empresa

Cada semana
Sociedad y cultura

Sociedad y cultura

Serie

31 OCT

Sleuthing out scientific fraud, and more...

On this week's episode: selling sunlight on demand, rhinos roamed Canada’s Arctic 23 million years ago, making a more precise parachute using kirigami, the winner of this year's prestigious Gerhard Herzberg Gold Medal and uncovering widespread scientific fraud.

31 oct

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54 min
HACE 2 DÍAS

Hope lies in knowing that "we've changed the world before”

Political analyst Rachel Maddow and author/activist Rebecca Solnit are sharp observers of Trump 2.0. They both share a common ground: opposition to anti-democratic actions taken by the second administration of U.S. President Trump, and where those actions are taking America, if not the world. The two American writers spoke with Nahlah Ayed about the existential issues of this American moment, a public conversation hosted by the International Festival of Authors and PEN Canada. The onstage event, in front of a Toronto audience, was part of the 5th annual Graeme Gibson Talk in Toronto.

hace 2 días

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55 min
24 OCT

Rise of the zombie bugs, and more…

On this week's spooktacular episode: Wolves are afraid of the big bad human, methane spewing from Montreal’s largest snow dump, screaming babies make us hot to get our attention, baby pterosaurs died in a torrential storm and mind-controlling parasites turn bugs into zombies.

24 oct

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54 min
HACE 3 DÍAS

How mind-bending theories could solve mysteries in physics

Physics has been full of astonishing discoveries over the past century. But they open up even bigger mysteries that scientists are working feverishly to explain. What is dark energy? And why is the expansion of the universe accelerating? In public talks at the Perimeter Institute for Theoretical Physics in Waterloo, Ontario, two prominent physicists – Sarah Shandera of Penn State University and Stanford University’s Savas Dimopoulos – discuss the breakthroughs of recent decades and what it will take to solve the most nettlesome mysteries that have deepened in their wake.

hace 3 días

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55 min
HACE 4 DÍAS

To fix America's caste system, acknowledge it exists: author

The true story of America is that it was built on a caste system comparable to India’s, says Pulitzer-prize-winning American journalist Isabel Wilkerson. The author argues that it's key to recognize the roots of the U.S. caste "structure" as she calls it, to understand why conflicts relating to race and class persist. Wilkerson delivered the 2025 Beatty Lecture at McGill University in Montreal.

hace 4 días

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54 min
HACE 1 DÍA

First historian Herodotus knew the power of story

For someone who died more than 2,400 years ago, Herodotus's voice is still very much alive. "He knows the way [a good story] can elevate but also corrupt and destroy our thinking," says professor Lindsay Mahon Rathnam in this IDEAS episode. The ancient Greek writer observed different cultures first-hand, while capturing the stories they share in an attempt to better understand how they came into being, and why they came into conflict with each other. *This episode originally aired on Oct. 16, 2023.

hace 1 día

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54 min
17 OCT

Moose are hot and bothered, and more...

Nobel Prize in medicine for a leash on our immune system Our immune system has enormous power to defend us against the wide range of pathogens and invaders that nature sends at us. But it’s a double-edged sword, and can target its powerful weapons against us as well. This year’s Nobel prize in Medicine or Physiology went to a group who discovered a critical mechanism that keeps the immune system in check, under normal circumstances, giving them new insights into the diseases that occur when it goes wrong. Yogurt with a creepy-crawly secret ingredient A team of researchers has duplicated an ancient recipe for yogurt that uses a unique ingredient to initiate fermentation: ants. They added squished ants to fresh milk, buried it in an anthill to incubate it, and enjoyed zesty yogurt soon after. A microbiological analysis showed that the ants contributed a bacteria to the yogurt that is also present in sourdough starter. An ancestor of the largest dinosaurs was a dog-sized biped Researchers have discovered a 230 million year old fossil high in the Andes of Argentina that is the precursor to the giant, long-necked sauropod dinosaurs like the iconic brontosaurus. This animal, however, is a two-legged herbivore that likely weighed less than 20 kilograms. Nobel in physics awarded for laying the groundwork for quantum computing Quantum tunneling is a strange phenomenon in which subatomic particles can pass through apparently impenetrable objects like magic. This year’s Nobel prize in physics was awarded to a team that discovered that this strange quantum phenomena can happen on larger scales too, and how their superconducting circuit also absorbs and emits energy at distinct energy levels, laying the groundwork for quantum computers. Neanderthals systematically rendered fat from animal bones Scientists think that the fragmented bones of at least 172 animals discovered at a Neanderthal site in Germany represent the remains of a large-scale processing site where they extracted nutritious and useful fat. This could be used for a range of things, from skin protection to preserving meat similar to pemmican. Moose are hot. Are they bothered? During the fall rut moose, particularly the males, are very active searching for mates and competing with rivals. This activity generates a large amount of heat, which could be a problem as moose don’t sweat. Scientists are investigating if, in a warmer climate, this might be interfering with their reproductive success.

17 oct

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55 min
30 OCT

Can democracies survive the attacks on the rule of law?

Even in some of the world’s sturdiest democracies, leaders are deliberately undermining courts to weaken checks on their power. In many cases, the justice system is being sidelined. How much damage has already been done? And how worried should we be about the future of democracies around the world? We'd love to hear from you. Fill in our listener survey.

30 oct

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54 min
HACE 5 DÍAS

Blue Jays' World Series run, Week in Canadian politics, One year since Trump's re-election, That's Puzzling!

Host Piya Chattopadhyay speaks with fans following the Toronto Blue Jays' World Series run and unpacks its significance with The Athletic's Dan Robson, The Toronto Star's Susan Delacourt and Rob Russo from The Economist break down Prime Minister Mark Carney's balancing act on the budget and trade talks, The New York Times' White House and national security correspondent David Sanger reflects on Donald Trump's impact one year since winning re-election, and our monthly challenge That’s Puzzling! returns with special guest Andrew Phung. Discover more at https://cbc.ca/Sunday

hace 5 días

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1 h y 36 min
31 OCT

Mexican fiction turns drug kingpins into vicious vampires

There’s a burgeoning genre of fiction coming from Mexico — stories that merge socio-political history and the impact of drug-related violence with fantastical stories of eerie ghosts, zombies, and monstrous cannibals. IDEAS explores dozens of gothic, horror and crime fiction novels. *This episode is part of our ongoing series, IDEAS from the Trenches, about outstanding PhD scholars across the country. It originally aired on June 5, 2023. We'd love to hear from you. Fill out our listener survey here.

31 oct

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54 min

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