Pourquoi les requins sont-ils obligés de nage...

Le “Mouse Paradise”, souvent appelé “Universe 25”, est une célèbre expérience menée dans les années 1960-1970 par l’éthologiste américain John B. Calhoun. Son objectif était d’observer comment une population animale se comporte lorsqu’elle vit dans un environnement idéal, sans ma ...  Show more

Voici les liens pour écouter l'épisode Pourquoi le tapis de course a-t-il été un instrument de torture ?Apple Podcasts: https://podcasts.apple.com/fr/podcast/pourquoi-le-tapis-de-course-a-t-il/id1048372492?i=1000756915527Spotify:https://open.spotify.com/episode/1JZfMJW5Cu88LpK2VQl ...  Show more

‏ستقول لي ولماذا لا تسأل عن السمكة؟ أقول لك: الحوت غير السمكة؛ فجهاز تنفسه يشبه البشر من نواحٍ، كما أنه حين يأكل يفغر فاه، ويندفع في الماء ويبتلع أطنانا من تلك السمكة التي تسأل عنها.حتى وقت قريب، لم يكن العلماء يعرفون كيف تتفادى الحيتان الاختناق، لكنّ نموذجا ثلاثي الأبعاد لفم الح ...  Show more

It's true that some sharks breathe most easily when they're swimming, but that doesn't mean they can't find ways to rest. Learn about buccal pumping, ram ventilation, and more in this episode of BrainStuff, based on this article: https://animals.howstuffworks.com/fish/sharks/shar ...  Show more

Why do sharks have multiple sets of teeth? Why do sharks lose so many teeth? Do sharks eat fish? How do sharks breathe underwater? Do sharks sleep? Give a listen to this totally jaw-some conversation about sharks with Dr. Kady Lyons, shark researcher at the <a href="https://ww ...

It’s Breathe Week - a whole week of episodes about one of the most important things our bodies do to keep us alive and healthy. Humans love to swim and play in the water - but we can’t breathe underwater without lotws of heavy scuba gear. Why is that?? We asked pediatrician Steph ...  Show more