Pratique du Shadowing: Plastic Isn’t The Problem You’ve Been Made To Believe - Apprendre l'anglais à l'oral avec la vidéo
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86 phrases
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Plastic isn't the problem we've been told it is.
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We've been told it's this terrible stuff that won't naturally rot away
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and contaminate our environment for hundreds if not thousands of years.
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But recent research has made it increasingly clear that this just isn't so.
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The true stories both better and worse.
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I have a brief summary.
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Environmental protection organizations have preached for half a century that plastic degrades very, very slowly.
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The Worldwide Fund for Nature, for example, says that plastic bottles last 450 years.
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According to the United Nations Environment Program, it can take thousands or even tens of thousands of years for plastic to degrade.
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And according to Greenpeace, plastic never goes away.
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You may ask, indeed, I think you should ask, how do they know, given that plastic didn't become widely used until about a century ago?
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And haven't any of these people ever seen plastic garden furniture?
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You can basically see the stuff rotting away with your own eyes.
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So what's really going on?
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We think of plastic as the epitome of an artificial product, but I think that artificial is not a helpful terminology.
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We're part of nature and I don't see why something we produce is any less natural than what other living beings produce.
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I think it makes more sense to refer to plastic as man -made
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or human -made if you want to be politically super correct.
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Plastics made of long chains of molecules called polymers and primarily produced from fossil fuels.
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That makes it what chemists call organic.
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Though plastics that we use in everyday life almost always contain other chemicals, many inorganic, to add color or elasticity or stability.
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That's right, plastics often have other chemicals added to make them more durable.
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This already tells you that the idea that plastics don't decay is somewhat questionable.
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Indeed, we know today that plastics begin to break down into smaller and smaller fragments incredibly quickly,
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giving rise to micro and later nanoplastics that have now spread around the entire globe.
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When this was first reported in 1972 by Edward Carpenter and Kenneth Smith, Other scientists weren't just surprised.
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They were openly hostile.
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According to Carpenter, the colleagues thought that the paper should never have been published and he was told to stick to biology.
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They were perfectly right, though.
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Micro and nanoplastics are now to be found anywhere from the Sahara Desert to the Arctic to the oceans.
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We literally eat and breathe the stuff.
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Now, that plastic fragments doesn't mean that it entirely chemically decays,
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but it does effectively increase the surface of the plastic and that means it becomes much more susceptible to sunlight, abrasion and chemical reactions.
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The shedding of micro and nanoplastics happened surprisingly quickly.
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A 2016 researcher showed
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that it took less than two months for a plastic coffee cup to shed nanoparticles
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when in water and exposed to UV light.
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Last year then, a group from Northeastern University measured how fast these particles undergo photodegradation in water,
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that is, how fast the polymers break apart into carbon dioxide other gases and other organic and inorganic substances.
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They estimated that a polystyrene particle with about one millimeter diameter would need about five and a half years,
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whereas a polypropylene particle with merely 100 nanometers diameter would fall apart in about half a year.
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This is roughly compatible with a finding from 2024,
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which found that a millimeter -sized plastic particle takes about half a year to decompose in water illuminated by light.
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It's also roughly compatible with a 2026 study from a Chinese group
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that looked at the decay of thin sheets of polypropylene and found a half -life of about a month.
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These are all data for specific types of plastic under specific circumstances.
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They don't tell us, for example, what happens to trash buried in soil.
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But my takeaway is that it's probably not going to take 10 ,000s of years for plastic to decompose.
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Let me be clear that I'm not saying that plastic is not a problem.
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It very clearly is.
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It's terrible for birds and fish who swallow it and even if it dissolves, it leaves behind potentially toxic chemicals.
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I'm not saying that plastic is not a problem.
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I'm just saying that the problem isn't that plastic doesn't decay.
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Indeed, I'd go so far to say that it'd be better if it wouldn't decay, that'd make it easier to remove,
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and it'd keep the carbon stored.
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We have also known for a decade that some bacteria have evolved the ability to digest plastic.
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There's also been a story that mealworms can do this too, but this hasn't been independently reproduced and has remained somewhat controversial.
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In any case, seeing that plastics contain a lot of usable chemical energy,
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it seems likely to me that some soil microbes will soon learn to digest it.
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What about the health effects of ingesting microplastics?
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I went through this in a recent video.
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And to make a long story short, there's currently no convincing evidence that microplastics have detrimental health effects.
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This does not mean they have no health effects.
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It merely means that the evidence is weak or non -existent.
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The story
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that plastic could take tens of thousands of years to rot was widely spread despite not having any evidence behind it whatsoever.
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It's only now that we get to see the numbers.
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Unfortunately, it might just be that the myth will live longer than the plastic itself.
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I find it difficult to think about how much we've damaged our environment, but I feel much better since I have joined
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Planet Wild, because it shows me that together we can help nature recover.
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Planet Wild is a community -based environmental protection organization.
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They're funding the restoration of ecosystems to preserve our nature and wildlife by partnering with different organizations every month.
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I've been part of their community for years now, and I've been really impressed by their work.
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They document all their projects with video reports that you can find right here on YouTube, so you can see your impact right away.
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In their recent mission, they brought wildlife back to the city of Bristol by planting wetlands.
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This is a lovely example of the hands -on work that
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Planet Wild is doing.
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Joining Planet Wild is a simple yet effective way to help this planet.
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So if you want to do something that matters, join Planet Wild.
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You can contribute whatever amount feels right.
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And if you're one of the next 100 people to sign up using my code, I'll cover your first month.
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Just scan the QR code or click on the link in the description.
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And don't worry, you can cancel any time.
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If you want to see them in action first, watch their mission Restoring Wetlands.
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Thanks for watching.
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See you tomorrow.
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Vocabulaire et conseils d’expression pour cette leçon
Cette leçon d’expression orale s’appuie sur la vidéo « Plastic Isn’t The Problem You’ve Been Made To Believe ». Les mots qui reviennent le plus souvent : plastic, planet, decay, chemical, Wild. Cette vidéo contient 86 phrases et 1136 mots à répéter en shadowing. La partie parlée dure 7:14. Le locuteur parle à un rythme naturel d’environ 157 mots par minute, proche d’une conversation courante. Seuls 81 % des mots font partie des 3 000 mots les plus courants en anglais, le vocabulaire est donc exigeant.
Vocabulaire clé de cette vidéo
15 mots de la vidéo à retenir, avec leur prononciation et leur sens :
| Mot | Prononciation | Sens |
|---|---|---|
| decay nom | /diˈkeɪ/ | décrépitude |
| particle nom | /ˈpɑɹtək(ə)l/ | particule |
| microwave nom | /ˈmaɪkɹoʊˌweɪv/ | micro-onde |
| soil nom | /sɔɪl/ | sol, terre |
| organic adjectif | /ɔːˈɡænɪk/ | organique |
| merely adverbe | /ˈmɪəli/ | simplement, uniquement |
| roughly adverbe | /ˈɹʌf.li/ | rudement |
| wildlife nom | /ˈwaɪldlaɪf/ | faune, nature |
| artificial adjectif | /ˌɑː.tɪˈfɪʃ.əl/ | artificiel |
| diameter nom | /daɪˈæmɪdɚ/ | diamètre |
| compatible adjectif | /kəmˈpæt.ə.bəl/ | compatible |
| digest verbe | /daɪˈd͡ʒɛst/ | digérer |
| polymer nom | /ˈpɑ.lɪ.mɚ/ | polymère |
| fragment nom | /ˈfɹæɡmənt/ | fragment |
| naturally adverbe | /ˈnæt͡ʃ.(ə.)ɹə.li/ | naturellement |
Les verbes à particule que vous entendrez
| Mot | Sens |
|---|---|
| go away verbe | partir, s'en aller |
| go through verbe | traverser |
| leave behind verbe | abandonner |
| sign up verbe | inscrire |
La grammaire de cette vidéo
Les structures que le locuteur utilise le plus, avec les mots exacts de la vidéo :
| Structure | Dans la vidéo |
|---|---|
| Present perfect have/has + participe passé — une action passée qui compte encore maintenant | we've been told · has made · have preached |
| Voix passive be + participe passé — l’accent est mis sur ce qui arrive, pas sur qui le fait | we've been told · have been published · be found |
Prononciation à surveiller
Le locuteur utilise 31 contractions et formes réduites, comme don't, I'm, isn't. Prononcez-les sous leur forme courte, telles que vous les entendez.
- Les sons « th »: thin /ˈθɪn/, breathe /bɹiːð/, myth /mɪθ/
- Les sons « sh » et « zh »: artificial /ˌɑː.tɪˈfɪʃ.əl/, trash /tɹæʃ/, sheet /ʃit/, potentially /pəˈtɛnʃ(ə)li/, controversial /ˌkɑn.tɹəˈvɝ.ʃəl/
- Mots longs — placez bien l’accent: artificial /ˌɑː.tɪˈfɪʃ.əl/, diameter /daɪˈæmɪdɚ/, compatible /kəmˈpæt.ə.bəl/, naturally /ˈnæt͡ʃ.(ə.)ɹə.li/, primarily /ˈpɹaɪ.mə.ɹə.li/
Les sons difficiles pour les francophones :
- /h/ — il se souffle, il n’est pas muet: helpful /ˈhɛlp.fl̩/, whereas /(h)wɛɹˈæz/, hostile /ˈhɑstəl/, whatsoever /ˌ(h)wʌtsoʊˈɛvɚ/
- /tʃ/ et /dʒ/ — à ne pas adoucir en « ch » et « j »: digest /daɪˈd͡ʒɛst/, naturally /ˈnæt͡ʃ.(ə.)ɹə.li/, furniture /ˈfɝ.nɪ.t͡ʃɚ/, biology /baɪˈɑ.lə.d͡ʒi/, researcher /ˈɹiˌsɝ.t͡ʃɚ/
- /r/ anglais — langue recourbée, sans frotter la gorge: particle /ˈpɑɹtək(ə)l/, microwave /ˈmaɪkɹoʊˌweɪv/, roughly /ˈɹʌf.li/, fragment /ˈfɹæɡmənt/, naturally /ˈnæt͡ʃ.(ə.)ɹə.li/
Comment s’entraîner avec cette vidéo
- Écoutez la vidéo en entier une fois sans parler et notez les mots que vous ne connaissez pas.
- Commencez à la vitesse 0,75×, répétez phrase par phrase, puis revenez à la vitesse normale quand cela devient facile.
- Enregistrez-vous et comparez avec l’original, en faisant attention à des mots comme decay, particle, microwave.
Qu'est-ce que la technique du Shadowing ?
Le Shadowing est une technique d'apprentissage des langues fondée sur la science, développée à l'origine pour la formation des interprètes professionnels. Le principe est simple mais puissant : vous écoutez de l'anglais natif et le répétez immédiatement à voix haute — comme une ombre suivant le locuteur avec un décalage de 1 à 2 secondes. Les recherches montrent une amélioration significative de la précision de la prononciation, de l'intonation, du rythme, des liaisons, de la compréhension orale et de la fluidité.