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65 million years ago, dinosaurs ruled the Earth.
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They dominated each time period they were in, becoming the kings of the animal kingdom.
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Then suddenly, that all changed.
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An asteroid came for Earth and wiped all the dinosaurs out, causing them to go extinct.
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But what if things were different?
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Time to turn back the clocks over 65 million years to see just what course evolution would have taken
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if dinosaurs still roamed Earth.
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In what ways would their bodies have changed over this time?
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How would they adapt to our planet's changing environment?
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And would some dinosaurs remain at the top of the food chain?
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A food chain that now includes you?
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This is What If?
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And here's what would happen if dinosaurs never stopped evolving.
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Before we reimagine the course of evolutionary history,
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let's explore just what kind of catastrophic series of events could have led to the extinction of
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so many dinosaur species in the first place.
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Going back about 66 million years into our planet's past, the Cretaceous Period would be nearing its end.
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but not before going out with a bang.
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A big one.
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No, not that big bang.
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An asteroid named Chicxulub, with a diameter of about 10 km,
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hurtled through space and our atmosphere to its final destination around the Yucatan Peninsula in modern-day Mexico.
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The impact of this giant hunk of space rock released an amount of energy equivalent to about 100 trillion tons of TNT.
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This explosion was billions of times more powerful than the atomic bombs dropped by the United States in World War II.
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In the immediate aftermath, it led to massive tsunamis and widespread fires,
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and filled the atmosphere with so much debris that it blocked the Sun.
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Temperatures dropped.
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Food chains were disrupted.
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As a result, 75% of all life vanished from Earth.
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Luckily, in our scenario, they'll never know what didn't hit them.
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When you look back through the evolutionary history of life on Earth, It's important to remember that it's always been a game of survival.
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And only the fittest species survive.
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That would mean that of all the dinosaur species that ever existed,
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not all of them would survive the millions of years of natural selection to still be around today.
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But let's see if a couple of our most famous prehistoric friends make it through this genetic gauntlet.
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Starting at the top of the food chain.
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one of the greatest apex predators of all time, the Tyrannosaurus rex.
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Many millions of years ago, a T rex would have used some of its highly sophisticated senses to hunt prey.
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These beasts likely had a range of visions similar to, or better than, hawks and eagles.
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The science suggests that throughout the T rex's evolution, their sight improved as their facial structure became narrower and their eyes grew larger.
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After many more millions of years of evolution, their vision might have improved to unfathomable levels.
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Instead of spotting prey hundreds of meters away, they could see their next meal several kilometers in the distance.
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But what about other parts of their bodies?
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Besides their notoriously tiny arms, the T-Rex was a towering figure, standing just under 4 meters tall.
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Over time, natural selection might have favored T-Rexes with longer, more muscular arms.
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By now, they might have developed better agility and range of motion to become even more formidable predators.
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And they wouldn't be the only predators that may have become even more dominant over time.
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Velociraptors were famous for their speed, agility, and hunting techniques.
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And they were intelligent, too.
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Maybe not as bright as movies like Jurassic Park make them seem, but certainly they had a leg up on some of their dumber plant-eating prey.
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With millions more years of evolution, these creatures would have developed highly advanced hunting techniques.
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Another thing Hollywood doesn't show you is that evidence suggests that raptors were likely covered in feathers,
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and that their evolutionary trajectory is very closely linked to the emergence of birds.
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Imagine over time that these feisty predators evolved to have wings, and could hunt helpless prey, like humans, from the skies.
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Well, more likely it would be your pets you'd have to worry about.
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Velociraptors were smaller dinos, only about 45 kg, and less than 2 m in length.
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But keep an eye on Rufus and Garfield.
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And maybe on the small children, too.
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Now, in terms of dinosaurs that already dominated the skies, the aviation skills of pterodactyls would have also continued to develop and improve.
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By the time they went extinct, these creatures were the largest known flying animals, with wingspans ranging from 2 to 11 meters.
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Ugh.
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If they continued to adapt to our planet's changing atmosphere and geographical shifts,
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well, who's to say these gigantic flying reptiles wouldn't have continued to grow?
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Can you imagine a day in the park, ruined by the surprise visit of one or more pterodactyls the size of a small building?
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Now, that's something you'd have to worry about.
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Not all dinosaurs would have evolved to become bigger, badder predators.
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Okay, maybe gentle giants like the brontosaurus could have continued growing in size, but they might have developed other features to make them less vulnerable to predators.
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For example, their skin.
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Natural selection might have favored those with increasingly thicker outer layers that could withstand the powerful bites of creatures like the T-Rex,
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or whatever it is the T-Rex would be known as now.
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Like for the other species, there'd be so many enormous environmental changes between their era and now.
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The brontosaurus was a herbivore, and as plant species underwent their own evolutionary process,
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these dinosaurs would likely have developed a more complex digestive system, similar to those of mammals.
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And this brings up another interesting dilemma.
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If these creatures never went extinct and kept evolving, uninterrupted by a pesky space rock?
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Would mammals like you be here today?
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Yeah, our earliest human ancestors evolved among creatures like mammoths and saber-toothed tigers.
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But now that we're adding in all these other species, only the fittest would survive.
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And in that case, human evolution could have taken an entirely different course too.
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Natural selection would have likely favored genes that would make us smaller and faster to avoid being eaten.
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And with the possibility that we'd be living among other highly intelligent species like raptors, our social structures might be completely different too.
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Instead of being the most dominant species on the planet, there's a strong chance we'd have to compete with these other dangerous predators.
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If at any moment we could be raided by a pack of vicious T-Rexes, would we ever have settled down in one place?
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Instead of human civilization evolving in great communities, maybe we'd only survive as solitary nomadic hunter-gatherers.
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Evolution is a mysterious puzzle that only time knows the answers to.
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If we reverse the course of one event, like the collision of the Chicxulub, there's basically no limit to how different your world could be today.
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Which makes me wonder, what would happen if an asteroid the same size hit Earth today?
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Or maybe a bigger asteroid?
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Well, that's a story for another WHAT IF.
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Vocabolario e note di pronuncia per questa lezione
Questa lezione di conversazione di livello B2 si basa sul video “What If Dinosaurs Never Stopped Evolving for 66 Million Years?”. Le parole che ritornano più spesso: dinosaur, species, predators, evolution, Earth. Questo video contiene 89 frasi e 1197 parole da ripetere con lo shadowing. Il parlato dura 8:38. Chi parla mantiene un ritmo costante di circa 139 parole al minuto, comodo per lo shadowing. Solo il 79% delle parole rientra nelle 3.000 più comuni dell’inglese, quindi il lessico è impegnativo. 14 delle sue 89 frasi sono domande: un buon esercizio per l’intonazione interrogativa e le risposte brevi.
Vocaboli chiave di questo video
Le 15 parole più avanzate del video, con pronuncia e significato:
| Parola | Pronuncia | Significato |
|---|---|---|
| dinosaur sostantivo | /ˈdaɪnəsoɹ/ | dinosauro |
| predator sostantivo | /ˈpɹɛd.ə.tɚ/ | predatore |
| asteroid sostantivo | /ˈæst(ə)ɹɔɪd/ | asteroide, pianetino |
| evolutionary aggettivo | /ˌiː.vəˈluː.ʃən.ɛɹ.i/ | evoluzionario, evolutivo |
| prey sostantivo | /pɹeɪ/ | preda |
| meter sostantivo | /ˈmitəɹ/ | metro, contatore |
| brontosaurus sostantivo | brontosauro | |
| mammal sostantivo | /ˈmæməl/ | mammifero |
| pterodactyl sostantivo | /ˌtɛɹ.əˈdæk.təl/ | pterodattilo |
| velociraptor sostantivo | /vəˌlɒsɪˈɹæptɚ/ | velociraptor |
| dominate verbo | /ˈdɑ.məˌneɪt/ | dominare |
| adapt verbo | /əˈdæpt/ | adattare |
| ancestor sostantivo | /ˈæn.sɛs.tɚ/ | antenato, ascendente |
| feisty aggettivo | /ˈfaɪsti/ | tenace, tosto |
| gatherer sostantivo | coglitore |
I phrasal verb che sentirai
| Parola | Significato |
|---|---|
| bring up verbo | menzionare, nominare |
Frasi da ripetere
Frasi brevi e complete del video che puoi riutilizzare nella conversazione di tutti i giorni:
- How would they adapt to our planet's changing environment?
- A food chain that now includes you?
- Would mammals like you be here today?
La grammatica di questo video
Le strutture che chi parla usa di più, con le parole esatte del video:
| Struttura | Nel video |
|---|---|
| Forma passiva be + participio passato — conta ciò che accade, non chi lo fa | were disrupted · were likely covered · would be known |
| Present perfect have/has + participio passato — un’azione passata che conta ancora adesso | have changed · it's always been · have developed |
Pronuncia a cui fare attenzione
Chi parla usa 12 contrazioni e forme ridotte, come we'd, wouldn't, you'd. Pronunciale nella forma breve, così come le senti.
- I suoni “th”: mammoth /ˈmæməθ/, unfathomable /ˌʌnˈfæð(ə)məb(ə)l/, withstand /wɪðˈstænd/, feather /ˈfɛðə/, aftermath /ˈæf.tɚˌmæθ/
- I suoni “sh” e “zh”: evolutionary /ˌiː.vəˈluː.ʃən.ɛɹ.i/, vanish /ˈvænɪʃ/, extinction /ɪkˈstɪŋkʃən/, vicious /ˈvɪʃəs/, collision /kəˈlɪʒn̩/
- Parole lunghe — attenzione all’accento: evolutionary /ˌiː.vəˈluː.ʃən.ɛɹ.i/, agility /əˈd͡ʒɪl.ɪ.ti/, pterodactyl /ˌtɛɹ.əˈdæk.təl/, velociraptor /vəˌlɒsɪˈɹæptɚ/, notoriously /nə(ʊ)ˈtɔː.ɹɪ.əs.li/
I suoni difficili per chi parla italiano:
- /h/ — va soffiata, non è muta: herbivore /ˈ(h)ɜːɹbɪvɔːɹ/, hurtle /ˈhɜɹt(ə)l/, prehistoric /ˌpɹiː.hɪsˈtoɹ.ɪk/, helpless /ˈhɛlplɪs/, hawk /ˈhɔːk/
- Consonante finale — senza aggiungere una vocale dopo: evolve /ɪˈvɑlv/, asteroid /ˈæst(ə)ɹɔɪd/, extinct /ɪkˈstɪŋkt/, dominate /ˈdɑ.məˌneɪt/, adapt /əˈdæpt/
- /æ/ — più aperta della “e”: asteroid /ˈæst(ə)ɹɔɪd/, mammal /ˈmæməl/, pterodactyl /ˌtɛɹ.əˈdæk.təl/, raptor /ˈɹæptɚ/, velociraptor /vəˌlɒsɪˈɹæptɚ/
Come esercitarsi con questo video
- Ascolta tutto il video una volta senza parlare e annota le parole che non conosci.
- Fai shadowing frase per frase a velocità normale, ripetendo ognuna finché il tuo ritmo coincide con quello di chi parla.
- Registrati e confronta con l’originale, facendo attenzione a parole come dinosaur, predator, asteroid.
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.