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Les saisons ça s'explique!

S8 E14
·
2025

Why is it hot in summer and cold in winter? The CTPS team wants to understand how the seasons work and how they influence our daily lives and those of animals! In the cabin, Max explains why there are seasons and why their number can vary from country to country. At the Lyon Neuroscience Research Center, Cécile is interested in the impact of the seasons on humans and discovers the importance of our internal clock, called the “circadian clock,” as well as the role of light on our well-being. Mathieu discovers phenology, the science and study of nature's rhythms, with a specialist from the observatory of seasons. Migration, hibernation—everything can be explained by the seasons!

Levels:
Elementary Grade 6 Grade 7 Grade 8
Subjects:
Social Studies, History, and Geography Geography Science and technology Earth and Space Systems
Skills:
Self-Directed Learning Global Citizenship and Sustainability
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E16 : Chut! Trop de bruit dans nos oreilles!

What is noise pollution and how can it be combated? Cécile studies its sources and solutions at Bruitparif. Mathieu explores its impact on birds and amphibians in Normandy. An investigation into the nuisances that punctuate our lives.
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E17 : Trésors Cachés : l'archéologie à la lumière du futur

Archeology is innovating! Between Lidar and carbon-14 dating, Mathieu explores an excavation site and the restoration of objects. Cécile immerses herself in the ancient theater of Orange to discover the secrets of modeling and cutting-edge technologies.
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E18 : Le gouffre de Padirac : un gouffre de sciences

103 meters underground, the Padirac sinkhole reveals 170 million years of history. Kimi explores its wildlife and legends, while Mathieu takes a boat trip to see unique geological formations. A fascinating dive into the heart of the Lot cave system.
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E19 : Tous accros aux smartphones?

Addicted to his screen, Mathieu consults a psychology professor to reduce his dependence. Meanwhile, Cécile follows the invisible path of our data (voice, photos, text messages) to understand how it circulates.
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E20 : Forts comme des ours!

The bear, between myth and reality. Unloved by farmers, it nevertheless possesses superpowers such as hibernation and a unique sense of smell. Discover how to coexist with it and how to react if you encounter one. A wild investigation into its tracks!
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E21 : Corriger la vue!

One in four children wears glasses, but how do they work? Cécile tests her eyesight with an ophthalmologist, Mathieu discovers how lenses are manufactured in a factory, and Max explains the optical physics behind correcting visual defects.
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E22 : Pétrole, un or noir si précieux

Where does plastic come from? Cécile traces its origins from oil extraction to its transformation into toys. Mathieu, meanwhile, searches for alternatives: can this material be created without oil? An investigation into the origins and future of our every
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E23 : L'huître, la perle des mers

Oysters: between disgust and fascination. Kimi uncovers the secret of mother-of-pearl and pearls, while Mathieu accompanies an oyster farmer out to sea. Max reveals the superpowers of oysters, such as their incredible ability to clean up urban water.
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E24 : L'eau : quelle énergie!

Did you know that water was the first source of energy harnessed by humankind? Today, it enables us to generate clean electricity thanks to incredible technologies. Take a journey through history and into the future to understand how water enlightens us.
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E25 : Animaux : il ne leur manque que la parole!

Do our animals talk to us? Mathieu deciphers the gestures of chimpanzees and the cries of parrots in zoos, while Kimi analyzes the language of our dogs and cats. Max reveals the secrets of these exchanges, from courtship displays to vocal signals.
Levels:
Elementary Grade 6 Grade 7 Grade 8
Subjects:
Social Studies, History, and Geography Geography Science and technology Earth and Space Systems
Skills:
Self-Directed Learning Global Citizenship and Sustainability