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À quoi servent les rayures des zèbres?

S1 E69
·
2016

David sets out to meet these intriguing two-colored animals. Is it a matter of aesthetics or a survival strategy in the savanna? Could this striking coat help zebras regulate their body temperature? Are these black-and-white stripes meant to help zebras blend into their surroundings to avoid predators? Agathe, David, and Vincent are going to unravel the mystery and, as usual, debunk common misconceptions.

Levels:
Elementary Grade 7 Grade 8 Secondary Grade 9 Grade 10 Grade 11 Grade 12
Subjects:
Science and technology Biology Physics Life Systems
Skills:
Critical Thinking Problem Solving
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E66 : Peut-on faire soi-même une mousse party?

14 min 50 s
The atmosphere is festive in the lab. Agathe, David, and Vincent have decided to throw a foam party. Thanks to expert advice, the testers are going to become experts on the subject.
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E67 : Peut-on marquer un but avec une voiture?

18 min 7 s
Is the famous commercial where soccer players score a goal with Sébastien Loeb’s car staged? Can you really score a goal with a car?
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E68 : La vie des bébés est-elle de tout repos?

16 min 48 s
Diaper changes, naps, and bottles… looked at that way, a baby’s life seems like a breeze. But is that really the case? Our test subjects are determined to debunk this common misconception.
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E69 : À quoi servent les rayures des zèbres?

15 min 38 s
David sets out to meet these intriguing two-colored animals. Is it a matter of aesthetics or a survival strategy in the savanna?
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E70 : Peut-on tirer une flèche dans une flèche?

16 min 38 s
Agathe, David, and Vincent take on a legendary figure: Robin Hood. Are today’s archers capable of shooting an arrow through another arrow, just as the hero did with such precision?
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E71 : Peut-on tromper ses papilles?

17 min 12 s
Are David and Vincent true foodies? Agathe decides to put their taste buds to the test. How will our test subjects react to the masked tests?
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E72 : Les équilibristes ont-ils un secret?

16 min 52 s
Is it an innate talent or a skill honed through hard work? Our extreme tester puts his balance to the test with the help of an ENT specialist. Eyes, feet, inner ear—what are the key factors for becoming a tightrope walker?
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E73 : Une voiture peut-elle exploser comme au cinéma?

16 min 18 s
The atmosphere is explosive in the lab! Agathe, David, and Vincent are convinced it’s impossible to blow up a car like in action movies.
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E74 : Peut-on se débarrasser des acariens?

15 min 38 s
By delving into the world of the infinitely small, the testers will bring this invisible world to light. We’ll see how to get rid of these tiny creatures—which, though useful, cause a great many allergies...
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E75 : Comment faire une baguette sans mie?

17 min 43 s
Some people love every part of bread—they wouldn’t leave a single crumb behind. Our group leader, however, prefers the crust. To satisfy Agathe’s culinary demands, David seeks help from a baker.
    Levels:
    Elementary Grade 7 Grade 8 Secondary Grade 9 Grade 10 Grade 11 Grade 12
    Subjects:
    Science and technology Biology Physics Life Systems
    Skills:
    Critical Thinking Problem Solving