Prática de Shadowing: Lab-grown meat is on the rise — here's how it is made - Aprenda a falar inglês com vídeo
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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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Objetivos de fala para este trecho
Este vídeo é perfeito para quem quer aprimorar a fluidez em tópicos técnicos e debates atuais. Ao falar sobre carne cultivada em laboratório, você pratica como explicar processos complexos de forma clara e articular opiniões sobre inovações. É um marco ideal para quem quer sair de frases básicas e mergulhar em conversas mais profundas, usando o método de shadowspeak para imitar a pronúncia e o ritmo natural.
Banco de frases reutilizáveis
- "é aclamado como uma solução para muitos dos maiores problemas de hoje"
- "o que isso envolve e, mais importante, os consumidores vão aceitar?"
- "o retorno pode ser enorme"
- "o que está atrapalhando?"
- "os benefícios superam os negativos"
- "tem o potencial de reduzir dramaticamente"
Essas frases são úteis em discussões sobre tecnologia, meio ambiente e tendências. Use um shadowing site para repetí-las, focando na entonação e na pausa entre as palavras.
Corrija seus pontos fracos
O maior desafio aqui é a pronúncia de palavras longas e complexas, como "bioreatores", "nutricional" e "reguladores". Muitos aprendizes aceleram a fala ao dizer essas palavras, perdendo a clareza. Use o método de shadow speech: ouça uma frase, pause e repita imitando exatamente o ritmo. Observe como os falantes nativos enfatizam sílabas (ex: "cul-ti-va-ted" em vez de "cul-ti-va-ted"). Um shadowing site bom ajuda a comparar sua gravação com a original, mostrando onde você pode melhorar. Lembre-se: a chave é não apenas repetir, mas entender o fluxo da fala.
Praticar com esse vídeo também ajuda a lidar com mudanças de tônico em frases interrogativas, como "mas o quão viável é a indústria?". Use o shadowspeaks para treinar essa flexibilidade, garantindo que sua fala soe natural e confiante.
Gramática neste vídeo
As estruturas que o falante mais usa, com as palavras exatas do vídeo:
| Estrutura | No vídeo |
|---|---|
| Voz passiva be + particípio passado — o foco está no que acontece, não em quem faz | being hailed · are then separated · is called |
| Present perfect have/has + particípio passado — uma ação passada que ainda importa agora | has been · has banned · has not offered |
O que é a Técnica de Shadowing?
Shadowing é uma técnica de aprendizado de idiomas com base científica, originalmente desenvolvida para o treinamento de intérpretes profissionais. O método é simples, mas poderoso: você ouve áudio em inglês nativo e repete imediatamente em voz alta — como uma sombra seguindo o falante com 1-2 segundos de atraso. Pesquisas mostram melhora significativa na precisão da pronúncia, entonação, ritmo, sons conectados, compreensão auditiva e fluência na fala.