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Excréments d'automne

S1 E12
·
2015

In the first few centimeters of the ground lives a greater number of living beings than on the entire surface of the planet, excluding the underwater world. This shows the importance of humus, an organic matter that nourishes the plants and helps maintain the ecological balance. Beside, the year 2015 has been declared the International Year of Soils by the UN.

Levels:
Secondaire 9e année 10e année 11e année 12e année
Subjects:
Sciences et technologie Biologie Chimie
Skills:
Créativité Innovation
French level:
B2 : Avancé ou indépendant
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E1 : Beauté, vertus et délices

3 min 8 s
Rot is beautiful, delicious and essential to life! The spectacular images of this first episode prove it and encourage the viewer to change their perception of a hidden aspect of life: the micro-organisms that recycle matter.
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E2 : Amateurs de putréfaction

4 min 29 s
Thanks to rot enthusiasts, nature is cleaned of dead plants and animals. Thus, some animals and three micro-organisms (molds, yeasts and bacteria) recycle matter.
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E3 : Petits soldats décomposeurs : les bactéries

3 min 37 s
At the beginning of life on Earth, there were bacteria. These single-celled organisms, capable of adapting to all environments, even the most extreme, are constitutive of all living things... even if human beings often consider them - and sometimes rightly so - as mortal enemies!
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E4 : Putréfaction sous contrôle : les levures

3 min 6 s
Yeasts are single-celled microscopic fungi that reproduce rapidly. Baker's yeast serves as a model for researchers to understand, among other things, the processes of cancer development.
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E5 : Les forces d'un réseau : les moisissures

4 min 2 s
Molds are multicellular microscopic filamentous fungi. There are more than one and a half million mold species! Velvety, short, stringy, woolly, grainy... each mold has its own style and food preferences.
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E6 : La genèse des moisissures

2 min 49 s
When, carried by the air, a mold spore finds its way into a damaged fruit, it develops and the fruit becomes moldy.
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E7 : Un monde qui ne se voit pas

3 min 21 s
As a brush, a duster, a bunch, a pompom... The thousand and one ways in which spores are made and organized fascinate scientists and offer quite unusual shapes and colors.
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E8 : Glissements progressifs des couleurs

4 min 47 s
To make sure food is edible, we associate certain colors with a hazard - and we should! By transforming the living, rot takes on varied and unprecedented tints to be admired beyond the repulsion they can create!
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E9 : Vivre du côté obscur

4 min 26 s
There is no life cycle without rot. The recycling of matter and the development of spores are favored by high levels of humidity and light. Temperature also plays its role, even if rot can develop in our fridges!
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E10 : Quand un déchet est un délice

3 min 30 s
In nature, nothing is wasted. Everything is recycled... This is also true for rot!
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E11 : Love story sous microscope

4 min 26 s
Bacteria, molds and yeasts reproduce. As scientists say, they do it near us, on us and even in us!
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E12 : Excréments d'automne

4 min 10 s
In the first few centimeters of the ground lives a greater number of living beings than on the entire surface of the planet, excluding the underwater world. This shows the importance of humus, an organic matter that nourishes the plants and helps maintain the ecological balance. Beside, the year 2015 has been declared the…
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E13 : Le soufre et le lilas

3 min 28 s
When food is rotten, its smell disgusts us. Foul, earthy, or putrid odors were long associated with disease, particularly the plague. However, strong smells sometimes announce gastronomic pleasures!
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E14 : Petits délices culturels

3 min 11 s
Seasoned, fermented, gamy, marinated, smoked foods are not always our favourite. Japanese natto, Chinese 100-year-old egg, long-aged French cheeses, or even Swedish surströmming... Even steeped in rot, the dishes that we consider appetizing vary according to cultures and times!
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E15 : L'émotion du dégoût

3 min 55 s
Decomposition disgusts most of us. This universal emotion has the primary function of protecting us from toxic substances. But there are other forms of disgust such as associative and moral disgusts...
    Levels:
    Secondaire 9e année 10e année 11e année 12e année
    Subjects:
    Sciences et technologie Biologie Chimie
    Skills:
    Créativité Innovation
    French level:
    B2 : Avancé ou indépendant