Pratica di Shadowing: Plastic Isn’t The Problem You’ve Been Made To Believe - Impara a parlare inglese con i video
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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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Vocabolario e note di pronuncia per questa lezione
Questa lezione di conversazione si basa sul video “Plastic Isn’t The Problem You’ve Been Made To Believe”. Le parole che ritornano più spesso: plastic, planet, decay, chemical, Wild. Questo video contiene 86 frasi e 1136 parole da ripetere con lo shadowing. Il parlato dura 7:14. Chi parla ha un ritmo naturale di circa 157 parole al minuto, vicino a una conversazione quotidiana. Solo il 81% delle parole rientra nelle 3.000 più comuni dell’inglese, quindi il lessico è impegnativo.
Vocaboli chiave di questo video
15 parole del video che vale la pena imparare, con pronuncia e significato:
| Parola | Pronuncia | Significato |
|---|---|---|
| particle sostantivo | /ˈpɑɹtək(ə)l/ | granello, pezzetto |
| microwave sostantivo | /ˈmaɪkɹoʊˌweɪv/ | microonda |
| soil sostantivo | /sɔɪl/ | suolo, terra |
| organic aggettivo | /ɔːˈɡænɪk/ | organico |
| merely avverbio | /ˈmɪəli/ | soltanto, solamente |
| roughly avverbio | /ˈɹʌf.li/ | aprprossimativamente, a grosso modo |
| wildlife sostantivo | /ˈwaɪldlaɪf/ | fauna, fauna selvatica |
| artificial aggettivo | /ˌɑː.tɪˈfɪʃ.əl/ | artificiale, artificioso |
| diameter sostantivo | /daɪˈæmɪdɚ/ | diametro |
| compatible aggettivo | /kəmˈpæt.ə.bəl/ | compatibile |
| digest verbo | /daɪˈd͡ʒɛst/ | digerire |
| polymer sostantivo | /ˈpɑ.lɪ.mɚ/ | polimero |
| fragment sostantivo | /ˈfɹæɡmənt/ | frammento |
| naturally avverbio | /ˈnæt͡ʃ.(ə.)ɹə.li/ | naturalmente |
| primarily avverbio | /ˈpɹaɪ.mə.ɹə.li/ | principalmente, fondamentalmente |
I phrasal verb che sentirai
| Parola | Significato |
|---|---|
| go away verbo | partire, andarsene |
| go through verbo | attraversare |
La grammatica di questo video
Le strutture che chi parla usa di più, con le parole esatte del video:
| Struttura | Nel video |
|---|---|
| Present perfect have/has + participio passato — un’azione passata che conta ancora adesso | we've been told · has made · have preached |
| Forma passiva be + participio passato — conta ciò che accade, non chi lo fa | we've been told · have been published · be found |
Pronuncia a cui fare attenzione
Chi parla usa 31 contrazioni e forme ridotte, come don't, I'm, isn't. Pronunciale nella forma breve, così come le senti.
- I suoni “th”: thin /ˈθɪn/, breathe /bɹiːð/, myth /mɪθ/
- I suoni “sh” e “zh”: artificial /ˌɑː.tɪˈfɪʃ.əl/, trash /tɹæʃ/, sheet /ʃit/, potentially /pəˈtɛnʃ(ə)li/, controversial /ˌkɑn.tɹəˈvɝ.ʃəl/
- Parole lunghe — attenzione all’accento: artificial /ˌɑː.tɪˈfɪʃ.əl/, diameter /daɪˈæmɪdɚ/, compatible /kəmˈpæt.ə.bəl/, naturally /ˈnæt͡ʃ.(ə.)ɹə.li/, primarily /ˈpɹaɪ.mə.ɹə.li/
I suoni difficili per chi parla italiano:
- /h/ — va soffiata, non è muta: helpful /ˈhɛlp.fl̩/, whereas /(h)wɛɹˈæz/, hostile /ˈhɑstəl/, whatsoever /ˌ(h)wʌtsoʊˈɛvɚ/
- Consonante finale — senza aggiungere una vocale dopo: microwave /ˈmaɪkɹoʊˌweɪv/, organic /ɔːˈɡænɪk/, wildlife /ˈwaɪldlaɪf/, digest /daɪˈd͡ʒɛst/, fragment /ˈfɹæɡmənt/
- /æ/ — più aperta della “e”: organic /ɔːˈɡænɪk/, diameter /daɪˈæmɪdɚ/, compatible /kəmˈpæt.ə.bəl/, fragment /ˈfɹæɡmənt/, naturally /ˈnæt͡ʃ.(ə.)ɹə.li/
Come esercitarsi con questo video
- Ascolta tutto il video una volta senza parlare e annota le parole che non conosci.
- Inizia a velocità 0,75×, fai shadowing frase per frase e torna alla velocità normale quando diventa facile.
- Registrati e confronta con l’originale, facendo attenzione a parole come particle, microwave, soil.
Cos'è la tecnica dello Shadowing?
Shadowing è una tecnica di apprendimento delle lingue supportata da studi scientifici, originariamente sviluppata per la formazione dei traduttori professionisti e resa popolare dal poliglotta Dr. Alexander Arguelles. Il metodo è semplice ma potente: ascolti un audio in inglese di madrelingua e lo ripeti immediatamente ad alta voce — come un'ombra che segue il parlante con un ritardo di solo 1–2 secondi. A differenza dell'ascolto passivo o degli esercizi di grammatica, lo shadowing costringe il tuo cervello e i muscoli della bocca a elaborare e riprodurre simultaneamente i modelli di discorso reale. La ricerca dimostra che migliora significativamente la precisione della pronuncia, l'intonazione, il ritmo, il discorso connesso, la comprensione dell'ascolto e la fluidità del parlato — rendendolo uno dei metodi più efficaci per la preparazione alla prova di speaking dell'IELTS e per la comunicazione reale in inglese.