Pratica di Shadowing: Lab-grown meat is on the rise — here's how it is made - Impara a parlare inglese con i video

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From the poor treatment of animals to uneven food distribution and even climate change,
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lab-grown food is being hailed by some as a solution for many of today's biggest issues.
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Our global agricultural system is responsible for over a quarter of all greenhouse gas emissions.
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Among the worst offenders are beef, dark chocolate, coffee and fish based on emissions per kilogram.
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There has been a lot of hype around cell-cultivated food, but how viable is the industry?
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What does it entail and more importantly, will consumers bite?
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Can you do the honours and lift the lid on your creation?
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Over a decade ago on the Edge, we reported on the world's first ever cultured beef burger.
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Unveiled by Professor Mark Post from Maastricht University, it cost around €250,000 to produce.
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He went on to set up MoSoMeat, a company which aims to bring the burger to the masses, and he's not alone.
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There are now hundreds of startups developing their own lab-grown products, but just how do they do it?
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It's a relatively simple procedure and similar for both meat and plant-based production.
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For meat, simply take stem cells from animal's tissue, add a nutrient-rich solution and watch the cells multiply into the three main components of meat,
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muscle, fat and connective tissue.
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Then put the cells into bioreactors or as they're more commonly known, cultivators.
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The cells are then separated and rearranged to build a final edible product.
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This part of the process is called scaffolding and can be very complicated.
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A steak for instance needs a lot more scaffolding than ground meat in a burger.
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The entire process takes between two and eight weeks but the payoff can be huge.
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It's estimated that just one thousandth of a pound of cow cells can create up to 4.4 billion pounds of beef.
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That sounds like an impressive return.
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So what's the hold up?
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Well, cost is a big issue.
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Currently, lab-grown meat is around 40% more expensive than animal meat.
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And then there's health and safety concerns.
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All production must happen in a completely sterile environment because the cells have no natural immunity from diseases.
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And while traditional meat is nutritionally dense, most of its proteins, vitamins and minerals are introduced via animal feed.
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You have to add these nutrients into cultured meat
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and it's still unclear whether today's additives provide equal nutritional value in the long term.
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As a result, regulators can't seem to align on the technology.
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Singapore became the first country in the world to approve cultured meat for human consumption in 2020.
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The US followed suit three years later, and the UK's Food Standards Agency approved use for pet food in early 2024.
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Italy, meanwhile, has banned the production, sale and import of lab-grown meat entirely,
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with the government citing its potential negative impact on the country's farming industry.
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France and Romania might do the same.
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The EU so far has not offered any guidance, but if it does green light use, it could put Brussels on a collision course with angry farmers.
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Some critics are calling for more research into the environmental impacts of cultured food, especially if production is ramped up significantly.
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After all, the manufacturing process still requires an energy source, but those championing the industry believe the benefits outweigh the negatives.
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They say cultured food has the potential to dramatically reduce food waste, tantalise our taste buds with things we've never traditionally eaten,
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and could provide health benefits by tailoring food to nutritional needs such as removing gluten
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or saturated fats without compromising on the taste.
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According to consulting firm McKinsey, cultivated meat could make up as much as half a percent of the world's meat supply by 2030,
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making it a $25 billion global industry.

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Cosa imparerai

Con questo video, migliorerai la pratica di conversazione in inglese focalizzandoti su due abilità chiave: la capacità di seguire un discorso tecnico (come la produzione di carne in laboratorio) con flessibilità e la pronuncia di termini specifici (es. "bioreattori", "scaffolding"). Inoltre, eserciterai il shadowing in inglese, ripetendo frasi a tempo con il speaker per rafforzare la fluidità.

Ascolta questi suoni

Nella conversazione, nota i collegamenti tra le parole: ad esempio, "it cost around" diventa itcostaround (la "t" di "it" si fonde con "cost"), e "a lot more" diventa alotmore (la "t" di "lot" è ridotta). Anche le forme contratte come "there's" e "they're" sono frequenti, quindi ascolta come la "e" di "there" si attenua. Questi dettagli rendono il discorso più naturale e ti aiuteranno a capire meglio il parlato veloce.

Parla come un nativo

Per imitare il ritmo del speaker, focalizzati sulla stress: nelle frasi lunghe, metti l'accento su parole chiave come "sostenibilità", "costo" o "regolamenti". Ad esempio, in "the benefits outweigh the negatives", la parola "outweigh" è pronunciata con più forza. Usa il shadow speech: ripeti ogni frase 2-3 secondi dopo il speaker, cercando di mantenere la stessa velocità e intonazione. Per esercitarti, usa il video come materiale per imparare l'inglese con YouTube: pausa e ripeti parti difficili, come "nutrient-rich solution" o "environmental impact". Così, migliorerai non solo la pronuncia, ma anche la capacità di rispondere a discorsi complessi in pratica di conversazione in inglese.

La grammatica di questo video

Le strutture che chi parla usa di più, con le parole esatte del video:

StrutturaNel video
Forma passiva be + participio passato — conta ciò che accade, non chi lo fabeing hailed · is called · are introduced
Present perfect have/has + participio passato — un’azione passata che conta ancora adessohas been · has banned · has not offered

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.

Tecnica dello shadowing: leggi la guida completa passo dopo passo →