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CBC Discover & Learn

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Channel • 22 Shows

Society & Culture

Society & Culture

Updated Daily
Earth Sciences

Earth Sciences

Updated Weekly
Business

Business

Updated Weekly
Society & Culture

Society & Culture

Updated Semiweekly
History

History

Updated Jan 16
News

News

Updated Weekly
News

News

Updated Weekly

5D AGO

Our Listener Question show

Have you ever wondered how particle accelerators work? Or what microwaves really do to food? Have you spent time pondering the mystery of how ice ages changed the Earth’s rotation or why whales haven’t figured out how to breathe underwater? Well you’ll find out all this and more on our Quirks & Quarks listener question show!

5d ago

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54 min
1D AGO

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.

1d ago

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54 min
4D AGO

Canadian universities as safe havens for scholars-in-exile

There is a growing number of researchers who are 'forcibly displaced' worldwide. Thirty-four Canadian universities and colleges are currently hosting scholars who’ve left their jobs and homes to find safety. Scholars-in-exile from dozens of countries gathered at Carleton University in Ottawa to discuss ways to support free thinking and research whenever it is threatened.

4d ago

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54 min
JUN 6

Eradicating plagues forever, and more...

Energy with a grain of salt Researchers have developed a new sodium metal powered fuel cell with up to triple the output for its weight of a lithium-ion battery. The team from MIT, including Yet-Ming Chiang, think these fuel cells could have enormous potential for electric vehicles — including flight. They say sodium can be electrically produced from salt on a large scale to facilitate this technology. The research was published in the journal Joule. Plants hear their pollinators, and produce sweet nectar in response A new study has found that plants can respond to the distinctive vibrations of pollinating insects by activating sugar-producing genes to produce rich nectar. In contrast they respond to the sound of nectar-stealing non-pollinators by cutting back on sugar. Francesca Barbero, from the University of Turin in Italy, presented this work at a recent joint meeting of the Acoustical Society of America and 25th International Congress on Acoustics. Penguin poop helps create the cooling clouds over Antarctica Penguin guano is rich in ammonia, and when it accumulates in penguin rookeries in Antarctica, that ammonia is released into the atmosphere, encouraging cloud production. Those clouds reflect sunlight into space, but can also trap sunlight reflected from the ice, so have complex climate interactions. This connection was discovered by University of Helsinki researcher Matthew Boyer, and was published in the journal Nature. Giant sloth family tree suggests trees are just a recent part of it Sloths used to be giants the size of bears and even elephants before disappearing around 12,000 years ago. An international group of paleontologists including University of Toronto’s Gerry De Iuliis have assembled a comprehensive family tree of the sloth to understand how a group that used to dominate the landscape was winnowed away to only a handful of relatively small, tree dwelling species. The research was published in the journal Science. Eradicating diseases — Can we wipe out ancient and modern plagues forever? In 1980 the World Health Organization declared Smallpox officially eradicated, meaning that for the first time, a plague that killed hundreds of millions of people had been eliminated by human ingenuity. It opened the question of whether we could do this for other lethal threats? We look at efforts to eradicate Polio, an ancient plague, and HIV, a more modern epidemic, to understand how researchers are trying to eradicate these diseases , how close they’ve come, and what’s preventing their final victory. Quirks spoke to Stan Houston, an infectious disease specialist and professor of medicine and public health at the University of Alberta in Edmonton. He’s worked on treating HIV and tuberculosis in places such as Zimbabwe, South Sudan, Ecuador and Alberta. Catherine Hankins was the chief scientific adviser for the Joint United Nations Program on HIV/AIDS in Geneva, Switzerland. And in 2013, she was named to the Order of Canada and in 2023 was inducted in the Canadian Medical Hall of Fame. She is currently an adjunct professor at the School of Population and Global Health at McGill University and a senior fellow at the Amsterdam Institute for Global Health and Development.

Jun 6

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54 min
3D AGO

Israel-Iran tensions and the G7 summit, Fatherhood history, Jake Tapper, Menu culture

Host Piya Chattopadhyay speaks with global affairs experts Arif Lalani and Jennifer Welsh about how heightened tensions between Israel and Iran are looming over the G7 leaders' summit, historian Augustine Sedgewick looks at how fatherhood has evolved through the ages, CNN anchor Jake Tapper defends his case that Joe Biden's cognitive decline was covered up, and literary food historian Nathalie Cooke muses on what menus can reveal about art, culture and class. Discover more at https://www.cbc.ca/sunday

3d ago

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1h 39m
4D AGO

Why 'build, baby build' won't be enough to fix housing

John Pasalis says building more housing isn't the only solution to high home prices. It ignores an even bigger problem: investors. He explains how decades of low interest rates and tax policy have turned us into a nation of real estate speculators — and until we fix that, prices aren't going anywhere. Fill out our listener survey here. We appreciate your input!

4d ago

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28 min
JUN 6

How Canadian nationalism died

In George Grant's famous 1965 essay, Lament for a Nation, the Red Tory philosopher argued that Canadian nationalism had died. He believed that when Canada was tied to the UK, the country was committed to a collective common good. But when it became integrated with the U.S., Grant says Canada abandoned this idea. Sixty years later, our relationship with the U.S. is being tested, igniting a rise in nationalism. PhD student Bryan Heystree finds hope in Grant's work and says there's valuable criticism worthy of our attention in the 21st century.

Jun 6

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54 min
JUN 9

The movement that unlocked a new masculinity – Dandyism

For over 200 years, the Dandy has been a provocateur, someone who pushes against the boundaries of culture, masculinity and politics. From Beau Brummell to Oscar Wilde to contemporary Black activists, IDEAS contributor Pedro Mendes tracks the subversive role the Dandy plays in challenging the status quo. *This episode originally aired on April 15, 2021. Guests in this episode: Rose Callahan, photographer and director André Churchwell, vice chancellor for equity, diversity and inclusion and chief diversity officer for Vanderbilt University Chris Breward, director of National Museums Scotland and the author of The Suit: Form, Function and Style Ian Kelly, writer, actor and historical biographer. His works include Beau Brummell: The Ultimate Dandy Monica Miller, professor of English and Africana Studies at Barnard College, Columbia University and author of Slaves to Fashion: Black Dandyism and the Styling of Black Diasporic Identity

Jun 9

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54 min
6D AGO

How Indigenous ecology is reviving land destroyed by wildfires

What happens to the land after a brutal wildfire? IDEAS visited St'át'imc territory near Lillooet, B.C., to follow land guardians and scientists from the Indigenous Ecology Lab at the University of British Columbia, as they document the effects of wildfires and chart a new future based on Indigenous approaches to healing and balancing an ecosystem. *This is part two of a two-part series. Guests in this series: Chief Justin Kane, elected Chief of Ts'kw'aylaxw First Nation Michelle Edwards, Tmicw coordinator for the St'át'imc Chiefs Council and the former Chief of the communities of Sekw'el'was and Qu'iqten Sam Copeland, senior land guardian for the P'egp'ig'lha Council Luther Brigman, assistant land guardian for the P'egp'ig'lha Council Travis Peters, heritage supervisor and interim lands manager for Xwísten First Nation Gerald Michel, council member and the Lands Resource Liaison for Xwísten First Nation Denise Antoine, natural resource specialist for the P'egp'ig'lha Council Dr. Jennifer Grenz, assistant professor in the department of forest resources management at the University of British Columbia. She leads the Indigenous Ecology Lab at UBC, which works entirely in service to Indigenous communities on land-healing and food systems revitalization projects that bring together western and Indigenous knowledge systems and centres culture and resiliency. Virginia Oeggerli, graduate student in the Indigenous Ecology Lab in the faculty of forestry at UBC Dr. Sue Senger, biologist working with the Lillooet Tribal Council Jackie Rasmussen, executive director of the Lillooet Regional Invasive Species Society

6d ago

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54 min
JUN 5

The famously polarizing father of capitalism

The 18th-century philosopher Adam Smith is often called “the father of economics,” and sometimes “the father of capitalism.” IDEAS contributor Matthew Lazin-Ryder examines how Smith’s name has been used and abused to both defend and attack free-market economics since his death.

Jun 5

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54 min

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