Le champ magnétique terrestre va-t-il s’inverser ?

Le champ magnétique terrestre va-t-il s’inver...

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Rediffusion - Pourquoi les aliments sous vide se conservent-ils mieux ?

 Les aliments sous vide durent plus longtemps grâce à un processus qui limite les principales causes de dégradation des aliments : l’oxydation, la prolifération microbienne, et l’évaporation.


L’oxygène et l’oxydation

L’oxygène de l’air joue un rôle central ...

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Rediffusion - Pourquoi certains animaux ont-ils des pupilles rectangulaires ?

Les pupilles des animaux présentent une grande variété de formes, allant des cercles aux fentes, en passant par les rectangles. Les pupilles rectangulaires, visibles chez des animaux comme les moutons, les chèvres ou certains amphibiens, jouent un rôle crucial dans leur survie ...

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