シャドーイング練習: The Mutated Animals of Chernobyl - 動画で英語スピーキングを学ぶ

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Something about this forest feels off.

Pines twist into bizarre shapes.

Spider webs hang crooked and uneven.

Red firebugs are crawling on the ground.

But the patterns on their backs are warped.

A bird flies overhead.

Its beak is deformed.

There's a reason for all this.

The forest sits inside a highly radioactive exclusion zone.

It's one of the most contaminated places on Earth.

Not far from here, the largest nuclear disaster in history happened in 1986.

A nuclear accident in the Soviet Union and the Soviets have admitted that it happened.

Deadly radiation is being released from...

Thousands died from the radiation's immediate and long-term effects.

For humans, the area remains mostly uninhabitable until today.

But nature stayed.

Plants and animals.

Wolves, deer, wild horses, birds and insects.

But the radiation changed them.

Spring 1986 in the dead of the night.

Reactor 4 at the Chernobyl nuclear power plant has just exploded.

Massive amounts of highly radioactive material like iodine and cesium are hurled into the air.

The radiation seeps into the cells of all living things in the area, including this deer.

30 minutes after the blast, it's dizzy and barely able to stay on its feet.

The radiation has burned the mucosal tissue inside its digestive tract.

Cells all across its body start dying.

Blood circulation in the brain falters.

And since the blood can't flow properly, pressure builds inside the skull.

The deer's blood pressure crashes, it suffers seizures, and multiple organs fail.

The next day, the deer is dead.

In the following days and weeks, the pine needles change color, first to yellow, then to red.

Trees die for kilometers around, giving the area a new name.

The Red Forest.

A few kilometers away, a shepherd dog lives in the town of Pripyat.

For the past day, it's been feeling unwell, tired and nauseous.

Its owners are worried.

They too feel under the weather, though they don't know why.

Then, a voice crackles over the radio with an announcement.

Dear friends, the city council, national deputies...

to cover up a nuclear disaster of unprecedented scale.

Like tens of thousands of others, this family will never return.

Their dog is on its own now.

Three days later, the food is gone.

On the fourth day, he leaves the house, hungry and searching for anything to eat.

He encounters other dogs wandering the empty streets.

They too were abandoned and left behind.

Suddenly, shots are fired.

The Soviet authorities have ordered police to kill all stray dogs, an attempt to stop the animals from spreading radioactive material.

The dogs flee into the forest.

Just like all the other animals here, they find themselves in the heart of the world's largest nuclear exclusion zone.

Radiation remains dangerously high for months.

Many animals develop chronic radiation sickness.

Blood pools in their livers and spleens, lymph nodes swell, thyroids fail.

The animals grow thin, and many die.

Over the next ten years, radiation levels drop significantly.

The only humans left are workers and guards looking after the ruins of the nuclear plant.

Beyond that, the area is almost completely abandoned.

In this vast and empty space, wildlife can spread freely.

Over the years, the zone evolves into one of Europe's largest nature reserves.

Countless animals settle in.

Bears and lynx, moose and foxes, and multiple packs of wolves.

Even some of the original residents remain.

Hundreds of street dogs, descendants of the pets left behind, roam the area.

Swallows skim over the treetops.

The rocks leap through the undergrowth, and they are all followed by their silent companion, the radiation.

The first thing you notice are the eyes.

One of the first signs of exposure to radiation is something called cataract in the eye.

It's a cloudiness of the lens of the eye that happens to people who are exposed to higher levels of radiation.

Timothy Mossoe.

He's a biology professor at the University of South Carolina.

Few people know the creatures of Chernobyl as well as he does.

He's talking to us from a research ship in the middle

of the Pacific studying the effects of nuclear weapon testing on wildlife.

We've had many exciting visits to Chernobyl.

You know I've been going to Chernobyl pretty much two or three times a year, sometimes four times a year.

A so-called cataract is a clouding of the lens in the eye.

It's a common disease in humans known as Grey Star.

It blurs the vision and its most severe form can cause total blindness.

The high radiation levels in Chernobyl cause many animals to develop cataracts.

The landscape itself has changed too.

This is what a natural pine forest looks like.

Green needles, straight trunks.

And this is what a pine forest looks like in the most contaminated areas of Chernobyl.

This trunk is twisted, stunted and misshapen.

The wood has changed its color.

If you look closely at the rings, you can see exactly when the disaster happened.

Near the base there are these strange clusters of tangled leaves called Witches' Brooms.

This forest doesn't just look eerily strange.

It's a stark reminder of what our actions can do to nature.

Seeing it can make you feel powerless, but it doesn't have to be that way.

Planet Wild is a community-based environmental protection organization.

Think of it as crowdfunding for nature.

Every month their community funds a carefully selected rewilding project to restore forests, bring back endangered species, and protect the oceans.

Planet Wild documents all their projects in monthly videos, so you can see how your contribution helps to protect nature.

In one of their latest projects, they used chainsaw detectors to protect one of Europe's last ancient forests.

Of course, environmental protection also involves broader systemic and regulatory change.

At the same time, collective efforts like these are essential to the larger cause.

Support Planet Wild's mission by scanning the QR code or clicking the link in the description.

Pay whatever amount feels right for you.

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The first 100 people to sign up using our code FERN10 will get their first month covered by us.

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You can cancel any time after that.

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Every forest has spider webs.

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Normally they're neat and symmetrical like this.

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But here, in Chernobyl's most contaminated areas, the gaps in the strands are far too large.

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The patterns are warped and chaotic.

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This is what a barn swallow usually looks like.

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Note the distinctive combination of blue-black feathers and a red face.

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This one from Chernobyl has white patches on its face.

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Its tail feathers are crooked and its beak deformed, stuck slightly open.

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A lump protrudes beneath its plumage.

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A tumor.

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Many changes are not visible from the outside.

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You can't see that this swallow will live a shorter life and have lower chances to successfully reproduce.

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Red firebugs are native to Central Europe.

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Their vibrant red and black coloring with its symmetrical patterns helps ward off potential predators.

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But Chernobyl firebugs are different.

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The patterns on their backs are warped and asymmetrical.

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Some are missing an eye and the fine black lines are blurred.

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All of these changes trace back to mutations in the genetic code.

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This is where the DNA is stored.

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The blueprint for the insects entire organism.

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DNA is made up of two strands, twisted together in a shape called a double helix.

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It's made up of base pairs.

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The genetic information is stored in the sequence of these bases, kind of like a computer carrying information using ones and zeros.

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Several of those bases form a gene.

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The body reads the sequence through complex molecular processes.

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Genes act as a blueprint.

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They determine how the bug looks, the pattern on its back and what it can and cannot digest.

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They also influence how long it lives, its vulnerability to certain diseases, and even its behavior.

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Scientists believe these blueprints make up only a tiny fraction of our DNA.

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Studies in humans suggest that around 8 to 15 percent of DNA are functional and actively doing something important.

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Radioactive atoms like uranium and cesium are unstable.

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They decay spontaneously, releasing radiation.

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That That radiation carries so much energy it can damage living cells the moment it makes contact.

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It can break DNA directly or split the water molecules in a cell.

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This creates smaller particles called free radicals.

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These free radicals then rip through the DNA.

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Base pairs can be swapped or deleted entirely.

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Or the entire DNA strand can break apart.

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When radiation hits the DNA, it damages it.

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Most of the time the damage is repaired, but often, if there's enough radiation, this damage will persist.

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Sometimes it will lead to a disease like a cancer or a tumor or some other developmental problem.

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Many of these mutations have no effect.

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The body either repairs them or they occur in parts of the DNA that don't serve an important function.

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But sometimes those repairs go wrong, and that's when lasting changes can happen, like the ones we see in Chernobyl.

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These changes can even be passed down to future generations.

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But some of the animals around Chernobyl aren't just mutated, they seem to have adapted and are thriving in their new environment.

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This is a tree frog.

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Normally tree frogs are green.

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But here in the exclusion zone, some of them are pitch black.

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The dark pigmentation likely comes from melanin.

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Melanin is what makes your skin darker in summer.

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Your body produces it to shield your skin from sunlight.

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But melanin can also help protect against other types of radiation.

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According to a 2022 study, the darkest frogs in Chernobyl were found in areas where radiation levels used to be especially high.

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So does that mean they've adapted to high radiation?

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Timothy Mossor is not convinced.

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He says the data isn't strong enough to prove a causal link.

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Frogs in Chernobyl show no relationship between the melanism and radiation level currently.

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So inside Chernobyl zone there are light frogs in highly radioactive areas and there are dark frogs in clean areas.

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That is just one of the many scientific debates around Chernobyl's wildlife.

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What can truly be verified and what's too speculative?

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Both sides hold firmly to their findings.

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There's another organism that may be putting the benefits of melanin to work.

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This black fungus.

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One of them grows here, right inside reactor 4.

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One of the most irradiated places on the planet.

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Radiation levels remain so high that nothing should be able to survive here.

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And yet, this fungus is thriving.

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Multiple independent studies suggest that this fungus may actually be using gamma radiation as an energy source.

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Much like plants use sunlight for photosynthesis.

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Unlike in the frogs, the melanin in this fungus doesn't just block radiation.

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It seems to convert it into energy, which the fungus then uses to grow.

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Melanized fungi like this one have been found in other highly radioactive places.

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Astronauts have even studied it aboard the International Space Station.

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Researchers hope that one day this fungus could act as a natural shield against radiation.

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Perhaps for space travel.

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As for the fungi in the reactor, it's still unclear whether they've truly adapted to the radiation or if they were just inherently able to cope with it.

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Larger mammals may have adapted to radiation exposure as well.

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At least that's what biologist Kara Love and her colleagues at Princeton University believe.

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They suspect that wolves living in the Chernobyl exclusion zone may be less likely to develop cancer

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or more resilient to the disease overall.

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Despite constant exposure to high radiation levels.

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The theory goes like this.

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Random and spontaneous mutations in DNA make some wolves less vulnerable to cancer.

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These wolves have a higher chance of survival, while others are more likely to die from the long-term effects of radiation, often from cancer itself.

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The survivors reproduce, natural selection happens.

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Their offspring inherit the protective genes.

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Over time, they breed with wolves that are also better adapted to radiation, and so on and so forth.

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After a few generations, the whole pack is less prone to cancer cancer.

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Researchers say the wolf's DNA evolved in regions around genes linked to the body's immune response to cancer.

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But is that actually realistic?

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The research hasn't been published yet, which means there's no way for us or anyone else to verify it.

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This study and many others have one thing in common.

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They all suggest that the Chernobyl nuclear disaster may have triggered evolution right before our eyes.

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Other scientists remain skeptical, including Timothy Musso.

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We wrote a paper a few years ago where we reviewed all of the literature that had been published on Chernobyl,

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claiming to test for adaptations and rapid evolution.

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And in every case, except for maybe one, the data were too weak.

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They did not have the strength, the scientific strength to support this hypothesis of adaptation.

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Mousseau has studied potential adaptations himself.

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He and his colleagues sampled colonies of certain bacteria in Denmark and at various sites across Chernobyl.

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The colonies are often found on the wings of swallows, among other places.

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Back in the lab, they exposed both sets of bacteria to radiation.

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Some colonies from Chernobyl actually reproduced better under radiation, especially those that had lived for years in areas with moderate background radiation.

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By contrast, colonies from Denmark, as well as those from the most highly contaminated parts of Chernobyl, were far less resistant to radiation.

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Because the experiment was carried out under carefully controlled lab conditions, the researchers are confident that this adaptation wasn't caused by any other environmental factor.

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To study the animals of the exclusion zone, Timothy Mossaux set up around a hundred motion-activated cameras throughout the area.

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In late 2021, they recorded something strange.

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Russian soldiers.

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In February 2022, Russia invaded Ukraine.

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Russian troops occupied the exclusion zone for weeks.

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Overnight, nearly all research in Chernobyl ground to a halt.

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some scientists were forced to flee the zone.

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When the Russian forces finally withdrew in the spring of 2022, researchers returned to find their work in ruins.

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Military vehicles had kicked up radioactive dust, offices and labs had been ransacked, computers and valuable equipment were stolen or destroyed,

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long-term surveys were interrupted, and some irreplaceable research data may be lost forever.

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Several promising studies were put on hold indefinitely.

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Carol Lough and her team never got the chance to return and study the wolves in the field.

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It's a bitter blow to our understanding of the world.

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Don't forget to check out Planet Wild and become a member.

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If you want to see them in action, check out their project protecting one of Europe's last ancient forests.

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チェルノブイリの変異動物たち：ビデオの背景と学びのポイント

このビデオは、1986年のチェルノブイリ原子力発電所事故後の放射能汚染地域に生きる動物たちの物語です。人間が去った地域で自然がどのように変化し、動物たちが放射能の影響を受けながらも生き続ける様子が描かれています。このようなリアルな出来事を題材にしたビデオは、YouTubeで英語学習する際に、単語や文法だけでなく、歴史や環境問題についても理解を深めるのに役立ちます。

日常会話に使える5つのフレーズ

Something about this forest feels off - 「この森は何かおかしい感じがする」。何か異常を感じる時に使える表現です。
the largest nuclear disaster in history - 「史上最大の原子力災害」。重要な事件を説明する際に便利です。
left behind - 「置き去りにされる」。人や物を残して去る場合に使われます。
searching for anything to eat - 「何でもいいから食べ物を探す」。飢えている様子を表現します。
flee into the forest - 「森に逃げ込む」。危険から逃げる場面で使えます。

シャドーイングのステップバイステップガイド

このビデオは少し難易度が高いかもしれませんが、英語スピーキング練習に最適です。shadowspeaksやシャドーイングサイトを使うのもいいですが、自分でも以下のステップで取り組めます。

まず、ビデオを1回聴いて全体の流れを把握しましょう。次に、1文ずつ止めて、自分の声で繰り返します。IELTS スピーキング対策でも重要なのが、発音やイントネーションを真似ることです。特に、「the radiation seeps into the cells」のような長い文は、区切りを覚えてスムーズに話せるように練習しましょう。最後に、ビデオと一緒に話すことで、リズムを身につけることができます。

このビデオを使ってシャドーイングを続けると、英語の理解力とスピーキング能力がどんどん上がります。ぜひ挑戦してみてください！

この動画の文法

話し手がよく使っている文型を、動画の実際の表現とともに紹介します。

文型	動画での表現
現在完了形 have/has + 過去分詞 — 過去の出来事が今も関係している	have admitted · has just exploded · has burned
受動態 be + 過去分詞 — 誰がするかより、何が起きるかに焦点を当てる	are warped · is deformed · being released
関係詞節 who / which + 節 — 人や物について情報を加える	people who are · yet, which means

シャドーイングとは？英語上達に効果的な理由

シャドーイング（Shadowing）は、もともとプロの通訳者養成プログラムで開発された言語学習法で、多言語習得者として知られるDr. Alexander Arguelles によって広く普及されました。方法はシンプルですが非常に効果的：ネイティブスピーカーの英語を聞きながら、1〜2秒の遅延で声に出してすぐに繰り返す——まるで「影（shadow）」のように話者を追いかけます。文法ドリルや受動的なリスニングと異なり、シャドーイングは脳と口の筋肉が同時にリアルタイムで英語を処理・再現することを強制します。研究により、発音精度、抑揚、リズム、連音、リスニング力、そして会話の流暢さが大幅に向上することが確認されています。IELTSスピーキング対策や自然な英語コミュニケーションを目指す方に特におすすめです。

シャドーイングのやり方: ステップ別の完全ガイドを読む →

シャドーイング練習: The Mutated Animals of Chernobyl - 動画で英語スピーキングを学ぶ

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チェルノブイリの変異動物たち：ビデオの背景と学びのポイント

日常会話に使える5つのフレーズ

シャドーイングのステップバイステップガイド

この動画の文法

シャドーイングとは？英語上達に効果的な理由