National Geographic Learning · Unit 9
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EXTREME
SURVIVAL

Robert Swan & the Poles at Risk

Lead-in 01

HAVE YOU EVER PUSHED BEYOND YOUR LIMITS?

What would drive someone to walk 1,400 kilometers through Antarctica — and then do it again at the other end of the Earth?

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Extreme Adventure

Walking to both Poles on foot — a feat most experts called impossible

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Environmental Crisis

Watching the ice disappear beneath your own feet — and what that truly means

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Physical Evidence

When your own body becomes proof of planetary damage — eyes, skin, and survival

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A Shared Future

How saving the Poles is not about geography — it's about our own survival on Earth

In this lesson, you'll follow one man's journey from an 11-year-old dreamer to a global climate advocate — and explore the powerful language that tells his story.

Reading 02

SKIM THE TEXT

Read quickly. Answer these three questions with a phrase or sentence.

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Who?

Who is the article about, and what is his main achievement?

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What Happened?

What frightening things did he notice during his expeditions?

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So What?

What does he do now, and why does it matter for all of us?

Who: Robert Swan — the first person to walk to both the North and South Poles.

What happened: At the South Pole, his eyes changed color and his skin blistered (ozone damage). At the North Pole, the ice began melting under his feet four months early.

So what: Swan now works to raise awareness about climate change — because he believes preserving the Poles is essential to humanity's own survival.
Reading 03

Section Heading · Paragraph 1

THE FIRST MAN TO WALK BOTH POLES

From a childhood dream to a record nobody believed possible — the story begins with certainty.

Reading 04

A Dream Born Early

At age 11, Robert Swan knew he wanted to be an adventurer. Inspired by famous polar explorers Roald Amundsen and Robert Scott, Swan wanted to become the first person to walk to both the North and South Poles. People told him he was crazy, but in 1985, after years of raising money, the first part of this adventure could begin. In January 1986, Swan and his team arrived at the South Pole following a 1,400-kilometer journey through Antarctica's intense conditions. Just three years later, Swan put together a new team to head to the North Pole. After walking 1,000 kilometers in 60 days, the team arrived at its destination. Swan, in his own words, became "the first person stupid enough to walk to both Poles."
"Knew" expresses certainty, not aspiration — it frames Swan's dream as settled knowledge rather than a wish. "Thought" or "hoped" would suggest doubt; "knew" conveys an unshakeable internal conviction.

The phrase "At age 11" is fronted to emphasize extreme youth — the certainty arrived remarkably early. This opening sentence establishes Swan's defining trait — conviction — before any action is described. It is a characterization technique: tell us what a person "knows" about themselves, and the reader immediately trusts them as a protagonist.
Reading 05

The Power of a Role Model

At age 11, Robert Swan knew he wanted to be an adventurer. Inspired by famous polar explorers Roald Amundsen and Robert Scott, Swan wanted to become the first person to walk to both the North and South Poles. People told him he was crazy, but in 1985, after years of raising money, the first part of this adventure could begin. In January 1986, Swan and his team arrived at the South Pole following a 1,400-kilometer journey through Antarctica's intense conditions. Just three years later, Swan put together a new team to head to the North Pole. After walking 1,000 kilometers in 60 days, the team arrived at its destination. Swan, in his own words, became "the first person stupid enough to walk to both Poles."
The participial phrase "Inspired by famous polar explorers…" is a fronted non-finite clause that gives the reason before the ambition. This ordering — cause first, then desire — makes the motivation feel logical and inevitable. Naming the specific explorers adds historical weight, situating Swan in a tradition of polar heroism.

"Famous" is doing quiet work: it signals these are recognizable names, so Swan is not pursuing obscurity but seeking to join an elite, publicly celebrated lineage. This creates an implicit scale: the bigger the heroes, the more audacious the dream.
Reading 06

Doubt and Determination

At age 11, Robert Swan knew he wanted to be an adventurer. Inspired by famous polar explorers Roald Amundsen and Robert Scott, Swan wanted to become the first person to walk to both the North and South Poles. People told him he was crazy, but in 1985, after years of raising money, the first part of this adventure could begin. In January 1986, Swan and his team arrived at the South Pole following a 1,400-kilometer journey through Antarctica's intense conditions. Just three years later, Swan put together a new team to head to the North Pole. After walking 1,000 kilometers in 60 days, the team arrived at its destination. Swan, in his own words, became "the first person stupid enough to walk to both Poles."
The sentence contains three time references: "in 1985" (a fixed calendar point), "after years of raising money" (a duration of effort), and the implied backdrop of Swan's youth. These layers compress the entire span of preparation.

The contrast word "but" is the fulcrum — it discards all skepticism in a single stroke. "After years of raising money" acknowledges a long, un-glamorous phase (fundraising, not exploring), making Swan's eventual success feel earned rather than lucky. The modal "could begin" expresses that conditions had finally been met: possibility became reality.
Reading 07

The First Pole Conquered

At age 11, Robert Swan knew he wanted to be an adventurer. Inspired by famous polar explorers Roald Amundsen and Robert Scott, Swan wanted to become the first person to walk to both the North and South Poles. People told him he was crazy, but in 1985, after years of raising money, the first part of this adventure could begin. In January 1986, Swan and his team arrived at the South Pole following a 1,400-kilometer journey through Antarctica's intense conditions. Just three years later, Swan put together a new team to head to the North Pole. After walking 1,000 kilometers in 60 days, the team arrived at its destination. Swan, in his own words, became "the first person stupid enough to walk to both Poles."
The phrase is a participial postmodifier attached to the main clause, compressing the entire months-long journey into a subordinate phrase. This compression is rhetorical — the journey is reduced to a dependent clause, making arrival the emphasized main event.

The specific number "1,400 kilometers" transforms vague heroism into measurable achievement. "Intense conditions" is deliberately understated — "intense" could describe a workout, yet it's applied to Antarctica. This understatement allows the reader to fill in the horror themselves, making the image more powerful than an explicit description.
Reading 08

No Time to Rest

At age 11, Robert Swan knew he wanted to be an adventurer. Inspired by famous polar explorers Roald Amundsen and Robert Scott, Swan wanted to become the first person to walk to both the North and South Poles. People told him he was crazy, but in 1985, after years of raising money, the first part of this adventure could begin. In January 1986, Swan and his team arrived at the South Pole following a 1,400-kilometer journey through Antarctica's intense conditions. Just three years later, Swan put together a new team to head to the North Pole. After walking 1,000 kilometers in 60 days, the team arrived at its destination. Swan, in his own words, became "the first person stupid enough to walk to both Poles."
"Just" performs a double function: it acts as a time minimizer ("merely three years") while also carrying a tone of casual understatement.

Most people would never attempt even one polar expedition in a lifetime; Swan attempted a second "just" three years after the first. The word makes Swan seem unhurried by what would be, for anyone else, a monumental pause. The verb "put together" is also notable — it's colloquial and active, conveying Swan's organizational agency rather than passive waiting.
Reading 09

The Second Destination

At age 11, Robert Swan knew he wanted to be an adventurer. Inspired by famous polar explorers Roald Amundsen and Robert Scott, Swan wanted to become the first person to walk to both the North and South Poles. People told him he was crazy, but in 1985, after years of raising money, the first part of this adventure could begin. In January 1986, Swan and his team arrived at the South Pole following a 1,400-kilometer journey through Antarctica's intense conditions. Just three years later, Swan put together a new team to head to the North Pole. After walking 1,000 kilometers in 60 days, the team arrived at its destination. Swan, in his own words, became "the first person stupid enough to walk to both Poles."
Both sentences use the same structure: [adverbial phrase] + [subject] + [arrived at the Pole]. This structural parallelism creates symmetry — the two pole-conquests are grammatically mirrored, signaling their equivalence as achievements.

The second arrival uses "its destination" rather than naming the North Pole directly. This substitution shows the writer's confidence that readers are tracking the story — creating narrative momentum. The reader fills in the name themselves, which deepens engagement.
Reading 10

Self-Deprecation as Self-Definition

At age 11, Robert Swan knew he wanted to be an adventurer. Inspired by famous polar explorers Roald Amundsen and Robert Scott, Swan wanted to become the first person to walk to both the North and South Poles. People told him he was crazy, but in 1985, after years of raising money, the first part of this adventure could begin. In January 1986, Swan and his team arrived at the South Pole following a 1,400-kilometer journey through Antarctica's intense conditions. Just three years later, Swan put together a new team to head to the North Pole. After walking 1,000 kilometers in 60 days, the team arrived at its destination. Swan, in his own words, became "the first person stupid enough to walk to both Poles."
"In his own words" is a critical attribution signal — it marks the quote as Swan's own language, not the author's judgment. Without it, calling Swan "stupid" would be an insult; with it, the self-deprecation becomes a badge of honor.

The humor operates through irony: "stupid enough" acknowledges that rational people wouldn't do this, while simultaneously celebrating the irrational courage required. Using self-mockery to claim extraordinary achievement is a strategy of likability and humility. It also closes Paragraph 1 on a memorable note — triumph delivered as a wry wink rather than a solemn declaration.
Reading 11

Section Heading · Paragraph 2

WHAT THE ICE REVEALED

Swan's body became a measuring instrument for planetary damage — and the ice beneath his feet sent the clearest warning of all.

Reading 12

The Dark Turn

During those two expeditions, however, Swan noticed some frightening things. At the South Pole, his eyes changed color and his skin blistered due to a hole in the ozone layer. At the North Pole, 1,000 kilometers from safety, the ice started to melt beneath his feet. This was four months earlier than the usual "melt season." These experiences made Swan realize something—the Poles were in real danger.
After six sentences of triumph — the dream, the inspiration, the doubt overcome, the two arrivals — "however" signals a structural reversal. The reader has been positioned to celebrate; "however" denies that resolution.

"Some frightening things" deliberately withholds specifics, creating suspense. The adverbial "During those two expeditions" ties the frightening observations directly to the achievement moments, making success and horror simultaneous rather than sequential. Swan couldn't simply celebrate; the Poles were already warning him.
Reading 13

The Body as Evidence

During those two expeditions, however, Swan noticed some frightening things. At the South Pole, his eyes changed color and his skin blistered due to a hole in the ozone layer. At the North Pole, 1,000 kilometers from safety, the ice started to melt beneath his feet. This was four months earlier than the usual "melt season." These experiences made Swan realize something—the Poles were in real danger.
The sentence gives the symptoms first — "eyes changed color," "skin blistered" — and explains the cause second — "due to a hole in the ozone layer." This reversal of normal cause-then-effect order ensures the reader experiences the bodily horror before the scientific explanation.

"Eyes changed color" is profoundly unsettling — it describes a transformation of a body part that identifies a person, making the damage feel deeply personal. "Blistered" is a precise, ugly verb — not "burned" or "hurt" but blistered, with its implication of vulnerable, open wounds. The cause — "a hole in the ozone layer" — then lands with institutional weight. Swan's body became a gauge of planetary damage.
Reading 14

Danger Beneath His Feet

During those two expeditions, however, Swan noticed some frightening things. At the South Pole, his eyes changed color and his skin blistered due to a hole in the ozone layer. At the North Pole, 1,000 kilometers from safety, the ice started to melt beneath his feet. This was four months earlier than the usual "melt season." These experiences made Swan realize something—the Poles were in real danger.
"Beneath his feet" makes the danger impossible to ignore or escape — the threat is literally underfoot, as immediate as danger can be. "Nearby ice was melting" would be distant and external; "beneath his feet" is personal and existential.

The phrase also evokes the basic human terror of the ground giving way. "1,000 kilometers from safety" quantifies isolation in terms any reader can picture. Together: Swan stands on disappearing ground, an enormous distance from any rescue — the most concentrated image of environmental crisis in the article.
Reading 15

A Number That Changes Everything

During those two expeditions, however, Swan noticed some frightening things. At the South Pole, his eyes changed color and his skin blistered due to a hole in the ozone layer. At the North Pole, 1,000 kilometers from safety, the ice started to melt beneath his feet. This was four months earlier than the usual "melt season." These experiences made Swan realize something—the Poles were in real danger.
This sentence converts a personal observation (ice was melting) into a dateable anomaly. "Four months earlier" is precise — not "unusually early" but a specific quantified discrepancy against a baseline.

The word "usual" implies a normal, established cycle (the "melt season") that has now been disrupted. The quotation marks around "melt season" signal a technical term, anchoring Swan's personal experience in scientific vocabulary. The brevity of the sentence — seven words — gives it declarative finality. It functions almost as a verdict: this is not natural variation, this is measurable change.
Reading 16

From Witness to Advocate

During those two expeditions, however, Swan noticed some frightening things. At the South Pole, his eyes changed color and his skin blistered due to a hole in the ozone layer. At the North Pole, 1,000 kilometers from safety, the ice started to melt beneath his feet. This was four months earlier than the usual "melt season." These experiences made Swan realize something—the Poles were in real danger.
"Something" creates a micro-suspense moment before the dash — the reader leans forward to discover what it is. This "something → dash → reveal" pattern is a classical rhetorical device: name the category before the content, use punctuation as a breath, then deliver.

The dash is more dramatic than a comma and more informal than a colon — it suits the gravity of a personal revelation. "The Poles were in real danger" is the article's thematic turning point: everything before was Swan's personal story; this sentence marks his conversion from adventurer to activist. The word "real" distinguishes genuine physical risk from theoretical concern, grounding the ecological message in direct witness.
Reading 17

Section Heading · Paragraph 3

A MISSION FOR THE PLANET

The expeditions are over — but the mission has only just begun. Swan's journey shifts from polar conquest to planetary survival.

Reading 18

The Weight of Memory

That feeling never left Swan. He now works to raise awareness about climate change and the ice melt of the South and North Poles. In doing this, Swan hopes that he can not only help in the preservation of these two amazing places, but also in our own survival here on Earth.
The four-word sentence contrasts deliberately with the complex sentences surrounding it. Its brevity performs its meaning: a feeling this elemental does not require elaboration.

"That feeling" reaches back to "realize something—the Poles were in real danger" and carries that alarm forward. The construction "never left" is more powerful than "stayed with him" or "he never forgot" — "never left" frames the feeling as an agent that attached itself to Swan, rather than a memory he chooses to retain. Notably, the subject of the sentence is "That feeling," not Swan — the feeling is grammatically in control, which mirrors the psychological reality.
Reading 19

From Adventurer to Activist

That feeling never left Swan. He now works to raise awareness about climate change and the ice melt of the South and North Poles. In doing this, Swan hopes that he can not only help in the preservation of these two amazing places, but also in our own survival here on Earth.
The entire article up to this point has used simple past to narrate completed events. "Now" marks a shift to the present — Swan's polar expeditions are history, but his activism is ongoing. This present-tense anchor ("now works") transforms Swan from a historical figure to a living, active person.

The phrase "raise awareness" positions Swan in a communicator role rather than an explorer role — he is no longer physically conquering the Poles but publicly advocating for them. The pairing "climate change and the ice melt" connects the global phenomenon to the specific, observed evidence Swan himself witnessed, grounding abstract concern in personal testimony.
Reading 20

One Man's Survival, Earth's Survival

That feeling never left Swan. He now works to raise awareness about climate change and the ice melt of the South and North Poles. In doing this, Swan hopes that he can not only help in the preservation of these two amazing places, but also in our own survival here on Earth.
The "not only… but also" structure creates additive escalation: it acknowledges one level of ambition (preservation of the Poles) before expanding to a higher one (human survival). The progression moves from the specific ("these two amazing places") to the universal ("here on Earth").

"Our own survival" is the article's most significant phrase: it repositions the Poles not as remote curiosities but as indicators of humanity's fate. The word "our" is the first time the article directly includes the reader in the story. The final words "here on Earth" seem obvious — where else? — but they function as a reminder: this planet is the only one we have. The most understated environmental call to action possible.
Language 21

NARRATIVE TIME FRAMING

"After + -ing" and "Following + noun phrase" — how do writers link effort to achievement?

A) After walking 1,000 kilometers in 60 days, the team arrived at its destination.

B) Swan and his team arrived at the South Pole following a 1,400-kilometer journey through Antarctica's intense conditions.

C) After years of raising money, the first part of this adventure could begin.
After + -ing (process) Following + noun (event package) Temporal framing

Both constructions connect a prior action to a main clause result. What is the difference between them? Why might a writer choose one over the other?

"After + -ing" makes the prior event an active process experienced by the subject — "after walking" means Swan himself walked every step. The gerund (-ing) emphasizes the duration and effort of the action.

"Following + noun phrase" treats the prior event as a completed unit — "following a journey" describes the journey as a packaged thing. It is slightly more formal, common in journalism and travel writing. When the writer says "following a 1,400-kilometer journey," the journey is nominalized into a noun, making it feel more official and substantial.

Key insight: Use "after + -ing" when you want to emphasize the act itself — the walking, the fundraising. Use "following + noun phrase" when you want to elevate the prior event to the status of a significant, recordable achievement.
Language 22

ADDITIVE ESCALATION

"Not only… but also" — how does language signal that the second item outranks the first?

A) Swan hopes he can not only help in the preservation
    of these two amazing places, but also in our own survival here on Earth.

B) [Simpler] Swan hopes to help preserve the Poles
    and also help with human survival.

C) At the South Pole, his eyes changed color
    and his skin blistered.
Not only... but also Additive escalation Specific → Universal

Compare A and B. Both express the same idea. What does "not only… but also" do that "and also" cannot?

"And also" (B) presents two things as roughly equal. "Not only… but also" (A) creates a hierarchy: the second item is presented as more important, more surprising, or logically stronger than the first.

The structure implies: "Item 1 is already significant — but there is something even more important." In the article, "preservation of the Poles" is significant; "our own survival here on Earth" is existential. The structure signals that the second term escalates beyond the first.

Contrast with sentence C ("his eyes changed color and his skin blistered"): simple "and" connects two equal observations. Neither symptom outranks the other — plain coordination is exactly right.

Key insight: "Not only… but also" is a tool for controlled emphasis escalation. Use it when the second item in a list genuinely exceeds the first in scope, importance, or surprise.
Language 23

TENSE AS A TIME-MAP

Simple Past (completed events) vs. Present Simple (ongoing truth) — how does tense signal the shift from story to message?

A) [Past Simple — archive: completed events]
   Swan arrived at the South Pole.
   The ice started to melt beneath his feet.
   These experiences made Swan realize something.

B) [Present Simple — ongoing: live truth]
   He now works to raise awareness about climate change.
   Swan hopes that he can help in our own survival.

C) [The bridge]
   That feeling never left Swan. [Past Simple]
   → He now works to raise awareness. [Present Simple]
Past Simple (archive) Present Simple (ongoing) Tense shift = message shift

The article switches from past simple to present simple in the final paragraph. What does this tense shift signal to the reader?

Past simple (A) narrates events that are fully completed — the expeditions happened, the ice melted, the realizations occurred. These are historical facts, archived in time.

Present simple (B) describes Swan's current, continuing activity — "works," "hopes." These verbs mark him as alive and active now, not just a historical figure.

The tense shift is the article's structural backbone: paragraphs 1 and 2 are archive (past); paragraph 3 is present (active). This signals that the article is not just biography — it is a call to awareness happening in the reader's present.

Key insight: Tense is a time-map for the reader. When a writer shifts from past to present, it signals: we have moved from "what happened" to "what is happening now." In journalism and non-fiction, the present tense often marks the transition from story to message.
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LESSON COMPLETE

01

Two Poles Conquered — Swan walked 1,400 km to the South Pole and 1,000 km to the North Pole: the first person in history to do both

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The Body as Witness — eyes changed color, skin blistered — personal physical damage that proved planetary damage

03

Four Months Early — ice melting four months before "melt season": the number that turned an explorer into an activist

04

Survival Is Shared — preserving the Poles is not geography; it is the condition for our own survival here on Earth

the first person stupid enough
to walk to both Poles.

— Robert Swan, in his own words

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