Le boomerang

What is the mucus in our nose used for? What are the causes of a runny nose? Denis from Paris wonders if our nose is running because our brain is melting? What do you think? Our two scientific experts answer Denis' question.

Have you ever been bitten by an insect? What strategies did you use to relieve the pain? What advice would you give to someone who gets bitten? Fabienne wonders if we can cure a jellyfish sting by peeing on it? Our science experts give us advice on the subject.

Michel calls on our science experts. In this clip, he wonders if the waves are caused by sea monsters. What are your hypotheses on the creation of the waves? Explain your theory to someone near you. Now watch the video to confirm or not your predictions.

Julien asks the following question: 'Can we hear each other fart in space?' This eccentric question surely makes you think of certain hypotheses. Share your ideas and try to justify. Now let's listen to the scientific or fictitious findings of our experts.

Have you ever had your ears plugged? What do you do when this happens to you? Gaston asks himself the following question: 'When our ears get blocked, is it because we have an earwig inside? Now let's separate fact from fiction by listening to our experts' response.

The question of the day comes from Arnaud: 'If you throw a coin at the top of a skyscraper, does it risk breaking someone in half? Let's go listen to the explanations of Dr Sais-Tout and Professor McCork.

Occasionally we have hiccups. Do you know a trick to get rid of hiccups? Lucille wonders if we can get rid of it by standing on your head. What do you think? Dr Sais-Tout and her assistant Mr McCork reveal the answer to this question.

Mireille wonders why lightning never strikes twice in the same place. According to you, is it possible that lightning strikes twice in the same place? Justify your hypothesis. Our scientific experts explain this natural phenomenon to us.

Do you think you've ever swallowed a spider while you were sleeping? Explain. Damien asks the following question: 'Is it true that in our lifetime we will all swallow about four spiders in our sleep?' Watch the clip to hear from our experts.

Where does the colour of our eyes come from? Why do we have a certain colour? Armande asks herself the same question. She wonders if the colour of her eyes depends on her mom's genes. What do you think determines eye colour? Now let's hear from the scientists.

When we take the plane, we use the toilet. At altitude, it is also very cold outside. André wonders where the toilet waste goes? Do you think planes throw the frozen needs of passengers into the sky? What do you think happens when the toilet is flushed on planes? Let's hear from our experts.

Alban wonders: 'If I swallow an apple core, will an apple tree come out of my ears?' Do you think if you swallow the seeds of an apple that an apple tree might grow in your stomach and stick out through your ears? Is this a myth or a reality? Dr Sais-Tout and Professor McCork from this episode answer that question.

The scientific question of the day is: 'If I sing the zip line in the Alps, will I cause an avalanche?' Do you have any idea of ??the answer? Let’s listen to the experts.

Can the colour red really make a bull angry? What are your assumptions? A relevant question for our science experts!

Have you ever sung for plants? Do you think that singing promotes the growth of these? Albert asks the show's experts, 'Will my plants grow better if I sing to them?' Listen carefully to the answer, it's fascinating!