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♪♪♪
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[thunder rumbling]
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NARRATOR:
The story of life on Earth...
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[roaring]
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...is marked
by a series of
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catastrophic extinction events.
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Natural disasters which have
threatened to wipe out
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many of the creatures
that call our planet home.
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But after every brush
with death,
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life has come back
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even stronger.
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One of the most devastating
catastrophes took place
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66 million years ago,
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00:00:42,083 --> 00:00:44,002
an asteroid hit the Earth
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with the destructive force
of nine billion atomic bombs...
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[explosion]
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ending the reign of
the giant dinosaurs.
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[loud roar]
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But it wasn’t the blast
that wiped them out.
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It was the decade of
darkness that followed.
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[up-tempo music]
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After the skies cleared,
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the Earth would belong
to a new dynasty of animals
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we are a lot more familiar with.
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[chitters]
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Mammals.
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[growling]
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[theme music song]
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[peaceful music]
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NARRATOR:
66 million years ago
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life on Earth is thriving.
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[wind howling]
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Polar forests cover
the high arctic,
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Winter is over
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and months of total darkness
have come to an end.
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[dinosaur soft roar]
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At last Spring is here.
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Sunlight shines on
this lost world
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where dinosaurs reign supreme.
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[dinosaur snarls]
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This Nanuqsaurus is
enjoying the spring air.
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He’s a gigantic arctic predator,
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weighing as much
as three polar bears.
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[dinosaur roaring]
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An older male,
he’s seen a lot of life.
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He still wears
his white winter feathers.
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Good for camouflage in the snow,
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but he sticks out a bit
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now that the trees
are turning green.
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[wind howling]
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Don’t let the peaceful
forest fool you,
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this guy knows another rival
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could be hiding
anywhere in here.
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[tense music]
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A surprise encounter could
result in a fight to the death.
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So, when he stumbles
into a female’s nesting area,
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he is wary.
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[hisses]
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But there’s
nothing to worry about.
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-[inspiring music]
-[dinosaur soft roar]
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She is his mate.
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They have been together
for twelve years.
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And they’ve had
each other’s backs
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through many
extreme Arctic seasons.
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Springtime is a relief
from the winter darkness,
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but the months of
plenty are yet to come
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when all the animals here
can bask in a long hot summer
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of 24 hour sun.
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[exciting music]
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Life is starting to gear up.
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Trees take leaf,
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warming waters
tell these mayflies,
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that it’s time to hatch.
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Everywhere there is renewal.
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It’s the same
for our Nanuqsaurus couple.
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She has just laid her eggs
and they are getting
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ready to have a family.
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Our new mom has built
a nest of leaves that
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not only protects her eggs
but also generates warmth
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which helps them incubate.
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[dinosaur soft growling]
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But a nice warm home
like this has also
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attracted a sleepy squatter.
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This tiny mammal, an Unnuakomys,
is napping the day away.
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But he’s not bothering anyone,
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so our couple doesn’t
pay him any mind.
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[squeaks]
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[loud growling]
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A strange animal call
drifts up from the valley below.
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Mom finishes covering her eggs.
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Now it’s time to hunt.
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The pair work well together,
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they’ve done
this many times before.
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[growling]
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Edmontosaurus.
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A vast herd of these herbivores
have arrived from the south
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in search of plants to graze.
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But these beasts won’t be easy
prey for our Nanuqsaurus couple.
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An adult Edmontosaurus
is as long as a school bus,
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far too large even
for our two predators.
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But they have a plan...
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and wait for their moment.
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[tense music]
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Right on time
some teenagers arrive.
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[growling]
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And like most teenagers
they are impatient.
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What they don’t realize
is they have bigger problems
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than who gets to eat first.
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What looks like a dim star,
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is actually an asteroid.
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[dramatic music]
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Seven and a half-miles wide,
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hurtling towards the Earth
at 45,000 miles per hour.
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[loud explosion]
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For the dinosaurs this
is the end of the world.
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NARRATOR:
66 million years ago
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the climate is warm,
and many species of
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plant and animal life
thrive even at the poles.
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The dinosaurs rule the world
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for now.
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They have no idea everything
is about to change.
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[celestial music]
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NARRATOR:
4,500 miles to the south
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a giant asteroid has slammed
into the Earth,
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unleashing the destructive force
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of nine billion
atomic bombs.
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[dramatic music]
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[thunder rumbling]
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Landing off the coast
of what is now Mexico.
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The rock penetrates deep
into the Earth’s crust,
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which triggers mega tsunamis
at sea.
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And releases a blast
that incinerates everything
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on land within 1,000 miles.
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But far away
in the Arctic Circle
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devastation has yet to hit.
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[dinosaur roar]
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And though their world is about
to end, the dinosaur predators
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continue to hunt as they have
done for millions of years.
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The adolescent group
have identified their target,
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a young Edmontosaurus
with his mother
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on the edge of the herd.
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[Edmontosaurus growling]
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The eager teenagers
go on the attack,
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while our couple wait.
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[tense music]
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[squeaks]
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At the same time,
shockwaves from the blast
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are racing across the planet
at close to the speed of sound
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[strong wind howling]
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...minutes after
the asteroid hit.
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[loud thudding]
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The first shock waves reach
the Nanuqsaurus Arctic home.
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Triggering earthquakes and blind
panic among the dinosaurs.
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[dinosaurs roaring]
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The herd stampedes.
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[dramatic music]
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In the chaos those that can’t
keep up are trampled.
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Finally, the tremors stop.
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One of the teenagers
didn’t survive.
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But his pals spot a chance to
pick up where they left off...
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-[tense music]
-[roars]
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...a juvenile,
abandoned by the herd.
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He doesn’t stand a chance.
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Our Nanuqsaurus couple watch...
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and now they make their move.
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[tense music]
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After letting the teenagers
do the hard work,
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our more experienced
team steals the prize.
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[loud roar]
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They’ve been running
this con for years.
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Mom and dad claim the kill.
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Hours have passed since
the asteroid slammed into Earth.
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But now another wave is tearing
through the atmosphere.
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An intense air blast.
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It overtakes the old couple.
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But they battle on
to get back to their nest.
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[strong wind howling]
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At last, the winds break.
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In all their years together,
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they’ve never experienced
anything like this.
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Despite the chaos most creatures
try to carry on as normal.
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This young Nanuqsaurus
may not know what happened,
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but he isn’t going to let
a good Edmontosaurus carcass
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go to waste.
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He’s interrupted
by a little opportunist.
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A Dromaeosaur.
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He has also
brought a friend.
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[squawks]
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And another.
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But this is
no family style restaurant.
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[squawks]
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The Nanuqsaurus is
not going to let these
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scavengers interrupt his dinner.
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[peaceful music]
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Further up the valley our
couple finally approach home.
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They don’t know the high
winds have damaged their nest,
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exposing their hidden eggs.
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[tense music]
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Making them easy picking
for a band of Dromaeosaurs.
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They’ve returned
seconds too late.
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[load roar]
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Even the father’s
terrifying show of strength
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can’t save their babies.
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00:16:04,588 --> 00:16:07,174
[emotional music]
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The mother finds four
of her eggs were destroyed.
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00:16:20,312 --> 00:16:24,608
Heartbroken,
they console each other.
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[soft growling]
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♪♪♪
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A terrifying and deadly day
for all the Artic animals.
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They might hope
that tomorrow will be easier.
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But the asteroid isn’t
finished with them yet.
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In fact,
the worst is yet to come.
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[mournful music]
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A towering pillar of
pulverized rock dust
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00:17:02,020 --> 00:17:03,981
rises from the impact crater.
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00:17:04,940 --> 00:17:09,195
Dense and vast it starts
to blocks out the sun
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for the entire planet.
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00:17:10,904 --> 00:17:12,865
[dramatic music]
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00:17:12,906 --> 00:17:17,870
A time of endless darkness
has arrived and threatens
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00:17:17,911 --> 00:17:20,539
all life on Earth.
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00:17:29,214 --> 00:17:31,425
NARRATOR:
An asteroid has hit the Earth
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00:17:32,217 --> 00:17:36,221
launching billions of tones of
debris into the atmosphere.
223
00:17:37,848 --> 00:17:40,642
[sniffing]
224
00:17:43,520 --> 00:17:47,608
A dark cloud starting
to covering the entire planet.
225
00:17:49,568 --> 00:17:54,114
This black swirling dust,
rich in carbon and sulfur,
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00:17:54,698 --> 00:17:57,284
is about to make
the world uninhabitable
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for millions of creatures.
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00:18:04,499 --> 00:18:06,418
[tense music crescendo]
229
00:18:06,459 --> 00:18:08,921
[music stops]
230
00:18:09,921 --> 00:18:13,342
Almost five thousand miles
north of the impact,
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00:18:14,009 --> 00:18:16,971
the creatures of the Arctic
are about to face
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00:18:17,012 --> 00:18:19,223
the asteroid’s final blow.
233
00:18:19,931 --> 00:18:23,894
[soft roars]
234
00:18:31,443 --> 00:18:33,779
-[suspenseful music]
-[wind howling]
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00:18:33,820 --> 00:18:36,573
As the debris
cloud reaches them.
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00:18:37,532 --> 00:18:40,661
They are plunged
into total darkness.
237
00:18:43,914 --> 00:18:46,750
They will never see
the sun again.
238
00:18:51,546 --> 00:18:54,592
Even animals who are
adapted to dark Arctic winters
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00:18:54,633 --> 00:18:58,470
will find this darkness
unlike anything
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00:18:59,054 --> 00:19:00,889
they’ve experienced before.
241
00:19:05,143 --> 00:19:10,023
Earth, once home to a diverse
spectrum of colorful life,
242
00:19:10,440 --> 00:19:13,902
is transforming into
a dark mass of gray.
243
00:19:19,074 --> 00:19:21,994
[soft music]
244
00:19:25,830 --> 00:19:30,419
Two months later what
should be a hot summer
245
00:19:31,211 --> 00:19:34,298
is instead a deep freeze.
246
00:19:37,008 --> 00:19:41,263
The natural rhythm of life
is being turned upside down.
247
00:19:41,888 --> 00:19:44,349
[ice cracking]
248
00:19:50,105 --> 00:19:52,107
[soft roar]
249
00:19:53,191 --> 00:19:57,946
For our Nanuqsaurus couple,
there is more tragedy.
250
00:19:59,781 --> 00:20:01,242
[brooding music]
251
00:20:01,283 --> 00:20:05,037
Their remaining eggs have frozen
in the bitter cold.
252
00:20:10,041 --> 00:20:12,753
Even this brave mother
couldn’t protect them
253
00:20:12,794 --> 00:20:16,632
from the decay and death
of a world with no sunlight.
254
00:20:18,049 --> 00:20:20,094
♪♪♪
255
00:20:20,135 --> 00:20:22,971
NARRATOR: With no reason to
stay by the nest they share,
256
00:20:23,680 --> 00:20:25,432
the two decide to move on.
257
00:20:25,473 --> 00:20:28,519
♪♪♪
258
00:20:28,560 --> 00:20:30,729
[dramatic music]
259
00:20:34,983 --> 00:20:36,568
NARRATOR: As months pass,
260
00:20:37,736 --> 00:20:41,823
trillions of tons of
dust strangle the planet.
261
00:20:43,992 --> 00:20:45,535
[wind howling]
262
00:20:49,289 --> 00:20:50,540
Rain is scarce.
263
00:20:51,041 --> 00:20:54,378
And what does
fall is turned to acid.
264
00:20:58,048 --> 00:21:01,885
In this cold darkness,
plants can no longer produce
265
00:21:01,926 --> 00:21:04,388
their energy
through photosynthesis.
266
00:21:08,141 --> 00:21:10,185
Even mature trees are dying.
267
00:21:11,269 --> 00:21:14,106
It’s the beginning
of the end for plant eaters
268
00:21:14,147 --> 00:21:15,816
who will starve.
269
00:21:16,316 --> 00:21:17,859
[growling]
270
00:21:21,321 --> 00:21:23,198
This young Edmontosaurus
271
00:21:23,239 --> 00:21:25,534
is struggling to breathe.
272
00:21:26,409 --> 00:21:28,412
Dust has filled his lungs.
273
00:21:29,037 --> 00:21:33,041
But even worse,
he’s lost his herd.
274
00:21:35,919 --> 00:21:40,465
He would be easy prey for
our resting pair of Nanuqsaurus.
275
00:21:41,383 --> 00:21:42,968
[growling]
276
00:21:43,009 --> 00:21:46,972
♪♪♪
277
00:21:49,140 --> 00:21:50,476
[growling]
278
00:21:50,517 --> 00:21:52,019
[growling]
279
00:21:55,939 --> 00:21:57,524
[growling]
280
00:21:58,691 --> 00:22:01,737
Fortunately for him,
with so many dying
281
00:22:01,778 --> 00:22:03,322
herbivores around,
282
00:22:03,363 --> 00:22:04,531
they’ve already eaten.
283
00:22:04,572 --> 00:22:05,991
[growling]
284
00:22:06,699 --> 00:22:10,912
♪♪♪
285
00:22:17,585 --> 00:22:19,504
[growling]
286
00:22:21,047 --> 00:22:22,591
[growling]
287
00:22:23,341 --> 00:22:25,094
The youngster is spared.
288
00:22:25,135 --> 00:22:26,803
[growling]
289
00:22:27,637 --> 00:22:29,807
The Edmontosaurus
herd is following their
290
00:22:29,848 --> 00:22:32,267
instincts and heading south.
291
00:22:32,892 --> 00:22:35,437
Their senses
tell them it’s winter.
292
00:22:39,107 --> 00:22:41,735
They have no
idea there’s nothing
293
00:22:41,776 --> 00:22:45,197
for them to the south
but more cold and darkness.
294
00:22:48,283 --> 00:22:51,495
For the Nanuqsaurus, the
departure of the Edmontosaurus
295
00:22:51,536 --> 00:22:56,625
herd means scarcity and hunger
will hit the predators too.
296
00:22:59,127 --> 00:23:03,131
Life is about to become
desperate for our old pair.
297
00:23:04,090 --> 00:23:05,675
[growling]
298
00:23:06,050 --> 00:23:07,636
[roaring]
299
00:23:11,556 --> 00:23:13,809
[dramatic music]
300
00:23:14,934 --> 00:23:17,146
NARRATOR: It’s been more than
a year since the asteroid
301
00:23:17,187 --> 00:23:21,691
collided with Earth and
the planet is an alien world.
302
00:23:24,277 --> 00:23:27,989
It remains shrouded in
a thick cloud of foul dust.
303
00:23:30,742 --> 00:23:33,161
And this apocalyptic,
endless night,
304
00:23:34,370 --> 00:23:38,542
the average temperature
has dropped 36 degrees
305
00:23:38,583 --> 00:23:42,838
and the once thriving ecosystems
have frozen to death.
306
00:23:44,214 --> 00:23:46,508
The Arctic,
like much of the planet,
307
00:23:46,549 --> 00:23:49,052
is in an
unprecedented deep freeze.
308
00:23:49,427 --> 00:23:53,473
♪♪♪
309
00:23:54,307 --> 00:23:57,853
Incredibly, there are
places water still runs.
310
00:23:58,645 --> 00:24:03,567
And here, near the Nanuqsaurus’
old nesting site, is an oasis.
311
00:24:04,692 --> 00:24:08,488
An area of volcanic activity
has caused the ground to warm.
312
00:24:09,155 --> 00:24:12,325
Water is now
flowing here instead of ice.
313
00:24:13,326 --> 00:24:16,621
And that attracts life.
314
00:24:17,872 --> 00:24:20,876
♪♪♪
315
00:24:21,668 --> 00:24:23,587
Insects thrive in the water.
316
00:24:23,628 --> 00:24:25,047
[squawking]
317
00:24:25,088 --> 00:24:27,757
They provide food for the birds.
318
00:24:28,758 --> 00:24:33,388
Miraculously, the dark gray
world is still showing signs of
319
00:24:33,429 --> 00:24:35,933
life and hope for the future,
320
00:24:35,974 --> 00:24:38,768
at least for these
smaller creatures.
321
00:24:39,352 --> 00:24:40,937
[growling]
322
00:24:44,899 --> 00:24:46,985
Our brave Nanuqsaurus pair
323
00:24:47,026 --> 00:24:51,239
are still hanging on,
unsure what their future holds.
324
00:24:51,531 --> 00:24:52,824
[growling]
325
00:24:53,074 --> 00:24:55,410
Our mother is once
again carrying eggs.
326
00:24:56,160 --> 00:25:00,874
But something is wrong and she
is growing sicker by the day.
327
00:25:02,125 --> 00:25:05,795
It will be impossible for her
to bring life into this world.
328
00:25:07,547 --> 00:25:08,840
[growling]
329
00:25:09,090 --> 00:25:11,843
Her mate is powerless to help.
330
00:25:13,428 --> 00:25:17,432
Unbearably,
in order for him to find food,
331
00:25:17,473 --> 00:25:19,518
he must leave her on her own.
332
00:25:20,643 --> 00:25:24,147
With no choice,
he ventures into the unknown,
333
00:25:24,731 --> 00:25:27,150
leaving her
without his protection.
334
00:25:27,734 --> 00:25:29,319
[wind howling]
335
00:25:34,240 --> 00:25:38,286
She is now alone
and vulnerable.
336
00:25:38,703 --> 00:25:40,288
[growling]
337
00:25:40,663 --> 00:25:42,916
[suspenseful music]
338
00:25:45,168 --> 00:25:48,004
The two teenage
Nanuqsaurus are back.
339
00:25:49,714 --> 00:25:52,676
Hungry and impatient as usual.
340
00:25:53,426 --> 00:25:55,178
[growling]
341
00:25:59,515 --> 00:26:03,228
They haven’t eaten
for days and are desperate.
342
00:26:04,687 --> 00:26:06,398
[roaring]
343
00:26:11,402 --> 00:26:14,864
Once,
they saw her as competition...
344
00:26:15,615 --> 00:26:17,367
[growling]
345
00:26:18,910 --> 00:26:21,329
...now, she is prey.
346
00:26:22,205 --> 00:26:23,790
[roaring]
347
00:26:26,959 --> 00:26:29,546
She will not go without a fight,
348
00:26:29,587 --> 00:26:32,174
but the end is inevitable.
349
00:26:32,215 --> 00:26:33,800
[roaring]
350
00:26:37,178 --> 00:26:38,722
[roaring]
351
00:26:43,476 --> 00:26:45,729
[dramatic music]
352
00:26:47,897 --> 00:26:49,733
The forests are frozen.
353
00:26:50,191 --> 00:26:54,904
And almost all large land
animals are dead and gone.
354
00:26:57,407 --> 00:27:00,118
Without sunlight,
the web of life that
355
00:27:00,159 --> 00:27:02,370
supported them has collapsed.
356
00:27:06,416 --> 00:27:11,004
Only the bones of our
female Nanuqsaurus remain.
357
00:27:11,671 --> 00:27:15,925
♪♪♪
358
00:27:18,136 --> 00:27:22,432
Sitting beside her skeleton
is her devoted mate.
359
00:27:23,141 --> 00:27:28,814
Now alone, he must endure
the cold and conserve his energy
360
00:27:28,855 --> 00:27:31,733
and hope for something,
anything,
361
00:27:31,774 --> 00:27:33,860
to give him a chance to survive.
362
00:27:33,901 --> 00:27:35,403
[growling]
363
00:27:38,781 --> 00:27:40,450
[roaring]
364
00:27:40,992 --> 00:27:42,535
[growling]
365
00:27:43,077 --> 00:27:44,329
[squawking]
366
00:27:48,207 --> 00:27:51,044
NARRATOR: Year two of
endless night on Earth.
367
00:27:51,502 --> 00:27:54,005
It is a catastrophe
for all life,
368
00:27:54,422 --> 00:27:58,009
especially large animals
like the dinosaurs.
369
00:27:58,801 --> 00:28:00,512
[growling]
370
00:28:05,349 --> 00:28:08,436
Our old female
Nanuqsaurus put up a fight,
371
00:28:08,770 --> 00:28:10,355
but is long gone.
372
00:28:10,897 --> 00:28:14,192
Miraculously,
her mate is still alive.
373
00:28:15,026 --> 00:28:18,196
Enduring the cold
and scavenging for food.
374
00:28:19,197 --> 00:28:21,700
His body has
even become a refuge
375
00:28:21,741 --> 00:28:24,035
for other living creatures.
376
00:28:26,996 --> 00:28:28,415
In his feathers,
377
00:28:28,831 --> 00:28:33,878
the tiny mammal, Unnuakomys,
picks ticks from his skin.
378
00:28:36,923 --> 00:28:39,134
A good exchange
for the warm bed.
379
00:28:39,884 --> 00:28:41,845
-[growling]
-[squeaking]
380
00:28:42,720 --> 00:28:46,307
The Nanuqsaurus never
did shed his winter coat.
381
00:28:50,561 --> 00:28:54,858
At last, he spots what
he has been waiting for.
382
00:28:55,233 --> 00:28:57,485
[ominous music]
383
00:28:59,403 --> 00:29:00,781
[growling]
384
00:29:00,822 --> 00:29:02,323
[chirping]
385
00:29:08,329 --> 00:29:09,706
[roaring]
386
00:29:09,956 --> 00:29:11,374
[growling]
387
00:29:12,834 --> 00:29:14,127
[squawking]
388
00:29:14,168 --> 00:29:15,462
[growling]
389
00:29:15,920 --> 00:29:17,505
[squawking]
390
00:29:18,256 --> 00:29:20,592
One of
the adolescent Nanuqsaurus
391
00:29:20,633 --> 00:29:23,553
is wasting his energy
chasing birds.
392
00:29:25,721 --> 00:29:28,600
Still, our male waits.
393
00:29:30,101 --> 00:29:33,480
He watches as
the kid wears himself out.
394
00:29:37,650 --> 00:29:39,235
[growling]
395
00:29:44,198 --> 00:29:46,451
Then, he summons what little
396
00:29:46,492 --> 00:29:49,954
strength he has for the attack.
397
00:29:51,789 --> 00:29:53,333
[growling]
398
00:29:54,166 --> 00:29:56,085
-[shrieking]
-[roaring]
399
00:29:56,627 --> 00:30:00,632
♪♪♪
400
00:30:04,802 --> 00:30:06,971
NARRATOR: Revenge is sweet.
401
00:30:07,388 --> 00:30:11,643
Our Nanuqsaurus is
now the last of his kind.
402
00:30:13,561 --> 00:30:16,273
After a 170 million year reign,
403
00:30:16,314 --> 00:30:20,568
the giant dinosaurs are
passing into history.
404
00:30:21,819 --> 00:30:24,739
♪♪♪
405
00:30:24,780 --> 00:30:27,367
Years go by, and still,
406
00:30:27,408 --> 00:30:30,036
the dark cloud blankets
the Earth.
407
00:30:30,494 --> 00:30:34,541
♪♪♪
408
00:30:34,582 --> 00:30:38,587
Robbed of the sun’s energy,
three quarters of
409
00:30:38,628 --> 00:30:43,049
all species across the
planet are driven to extinction.
410
00:30:43,090 --> 00:30:46,970
♪♪♪
411
00:30:47,011 --> 00:30:48,513
[chirping]
412
00:30:55,811 --> 00:30:58,857
♪♪♪
413
00:30:58,898 --> 00:31:01,568
Finally, a decade later...
414
00:31:02,568 --> 00:31:07,615
the dust clouds clear
and give way to a new dawn.
415
00:31:09,200 --> 00:31:13,872
Seeds that have laid dormant
in the soil spring to life.
416
00:31:14,330 --> 00:31:18,209
♪♪♪
417
00:31:25,049 --> 00:31:27,719
♪♪♪
418
00:31:29,095 --> 00:31:30,555
Few animals made it,
419
00:31:30,596 --> 00:31:33,391
finding
creative ways to survive.
420
00:31:34,976 --> 00:31:37,228
Some hid underground...
421
00:31:38,396 --> 00:31:40,565
...some in water.
422
00:31:41,774 --> 00:31:45,278
But all were
small and adaptable.
423
00:31:48,572 --> 00:31:51,701
The planet they
inherited is a blank canvas,
424
00:31:53,494 --> 00:31:58,833
and evolution is about
to go into overdrive.
425
00:31:59,375 --> 00:32:02,086
[birds chirping]
426
00:32:07,049 --> 00:32:09,218
NARRATOR:
Five million years later
427
00:32:13,556 --> 00:32:17,602
a vibrant new habitat now
dominates the land.
428
00:32:22,982 --> 00:32:25,735
Lush, tropical rainforests.
429
00:32:26,444 --> 00:32:28,571
[birds singing]
430
00:32:35,619 --> 00:32:38,915
Beneath the canopy,
the air is filled with the scent
431
00:32:38,956 --> 00:32:40,583
of colorful flowers
432
00:32:41,500 --> 00:32:44,128
and the hum
of pollinating insects.
433
00:32:44,795 --> 00:32:46,214
[buzzing]
434
00:32:47,089 --> 00:32:49,551
The only descendants
of the dinosaurs that have
435
00:32:49,592 --> 00:32:52,595
survived are the birds.
436
00:32:53,763 --> 00:32:55,765
Other creatures have
made the most of this new
437
00:32:55,806 --> 00:32:59,185
environment
and found ways to thrive.
438
00:33:01,812 --> 00:33:04,858
High in the canopy,
it is not just the birds
439
00:33:04,899 --> 00:33:06,317
looking for breakfast.
440
00:33:06,692 --> 00:33:08,277
[squeaking]
441
00:33:09,320 --> 00:33:12,490
These are Plesiadapis.
442
00:33:13,240 --> 00:33:16,536
They are mammals,
and mammals are thriving
443
00:33:16,577 --> 00:33:17,912
in these new forests.
444
00:33:21,707 --> 00:33:24,335
This is a fruit hunting mission.
445
00:33:25,127 --> 00:33:29,340
They work together to
find the best afternoon snack.
446
00:33:31,509 --> 00:33:34,846
And there are
plenty of delicious options.
447
00:33:38,015 --> 00:33:39,934
The new world is
so abundant,
448
00:33:39,975 --> 00:33:43,396
they have the luxury to choose
only the ripe ones.
449
00:33:47,191 --> 00:33:48,901
[squeaking]
450
00:33:51,112 --> 00:33:55,533
Plesiadapis is one of
the very first primates.
451
00:33:56,575 --> 00:33:59,871
A group of mammals whose
intelligence and climbing skills
452
00:33:59,912 --> 00:34:03,833
have helped them seize the high
ground up in the tree canopies.
453
00:34:09,839 --> 00:34:13,843
But in the water below,
there is danger.
454
00:34:15,344 --> 00:34:17,555
[suspenseful music]
455
00:34:23,352 --> 00:34:25,688
Not every reptilian predator...
456
00:34:25,729 --> 00:34:27,023
[squeaking]
457
00:34:27,606 --> 00:34:29,692
died with the dinosaurs.
458
00:34:30,067 --> 00:34:31,402
[squeaking]
459
00:34:35,948 --> 00:34:37,450
[birds singing]
460
00:34:37,491 --> 00:34:40,995
NARRATOR: It is five million
years after the asteroid impact.
461
00:34:41,871 --> 00:34:45,750
The world is now covered
in lush tropical rainforests.
462
00:34:48,627 --> 00:34:52,298
Here, birds and mammals thrive.
463
00:34:54,633 --> 00:34:57,428
The giant dinosaurs are gone,
464
00:34:58,679 --> 00:35:01,974
but other reptilian
predators have survived.
465
00:35:04,101 --> 00:35:06,312
[suspenseful music]
466
00:35:08,647 --> 00:35:10,942
This Plesiadapis is safe
467
00:35:11,650 --> 00:35:14,070
as long as he stays
in the trees.
468
00:35:14,987 --> 00:35:19,033
♪♪♪
469
00:35:20,534 --> 00:35:23,830
But this tasty
snack is just out of reach
470
00:35:25,164 --> 00:35:28,084
and he makes
a potentially fatal mistake.
471
00:35:28,417 --> 00:35:29,544
[squeaking]
472
00:35:29,585 --> 00:35:30,795
[splashing]
473
00:35:32,087 --> 00:35:34,674
[dramatic music]
474
00:35:39,345 --> 00:35:41,389
This little mammal has no idea
475
00:35:41,430 --> 00:35:43,808
what lurks in the murky depths.
476
00:35:44,266 --> 00:35:48,312
♪♪♪
477
00:35:48,938 --> 00:35:50,940
It doesn’t look
good for our little...
478
00:35:54,193 --> 00:35:55,945
aw, never mind.
479
00:35:56,654 --> 00:35:58,406
[squeaking]
480
00:35:59,907 --> 00:36:01,951
[dramatic music]
481
00:36:04,161 --> 00:36:06,998
Crocodiles survived
the apocalyptic winter
482
00:36:07,039 --> 00:36:10,376
because they lived in the water
and could go long periods
483
00:36:10,417 --> 00:36:11,711
without eating.
484
00:36:17,591 --> 00:36:21,596
After devouring his prey,
this giant Kosmodraco
485
00:36:21,637 --> 00:36:25,016
likes to take a
long bask in the sun.
486
00:36:31,897 --> 00:36:37,570
He settles down and opens
his mouth wide to keep cool.
487
00:36:39,154 --> 00:36:43,660
But a nice warm patch
of sand attracts all sorts
488
00:36:43,701 --> 00:36:45,578
of creatures from the forest...
489
00:36:48,747 --> 00:36:50,708
...like Titanoides.
490
00:36:52,960 --> 00:36:54,545
[growling]
491
00:36:55,421 --> 00:36:57,131
[Titanoides growling]
492
00:36:58,090 --> 00:37:01,427
NARRATOR: Mammals like these
have evolved to be immense
493
00:37:01,468 --> 00:37:03,262
and powerful.
494
00:37:03,929 --> 00:37:07,099
Large enough to take on
the biggest reptiles.
495
00:37:07,599 --> 00:37:09,602
[hissing]
496
00:37:14,231 --> 00:37:15,942
[roaring]
497
00:37:16,608 --> 00:37:20,863
♪♪♪
498
00:37:21,697 --> 00:37:23,616
[growling]
499
00:37:28,579 --> 00:37:31,624
These tough guys now
rule the shores.
500
00:37:32,666 --> 00:37:34,627
[growling]
501
00:37:38,756 --> 00:37:40,299
[splashing sound]
502
00:37:40,841 --> 00:37:45,054
The age of the mammals
has truly arrived.
503
00:37:47,806 --> 00:37:50,643
No longer in
the shadow of the reptiles,
504
00:37:51,685 --> 00:37:55,606
mammals will soon
dominate the planet.
505
00:37:55,647 --> 00:37:59,819
♪♪♪
506
00:38:10,662 --> 00:38:12,915
[slow dramatic music]
507
00:38:17,920 --> 00:38:20,214
NARRATOR: When scientists
became convinced that
508
00:38:20,255 --> 00:38:22,967
a cosmic collision
killed off the dinosaurs,
509
00:38:23,926 --> 00:38:26,721
it inspired more
thorough scientific study
510
00:38:26,762 --> 00:38:30,224
of the threat asteroids
present to life on Earth.
511
00:38:31,058 --> 00:38:35,104
♪♪♪
512
00:38:37,314 --> 00:38:39,692
Starting in the 1990s,
513
00:38:39,733 --> 00:38:41,986
astronomers all over the world
have been using
514
00:38:42,027 --> 00:38:44,697
their telescopes
to track and catalog
515
00:38:44,738 --> 00:38:47,575
the many objects flying
around our Solar System.
516
00:38:48,033 --> 00:38:50,870
♪♪♪
517
00:38:51,912 --> 00:38:55,083
Today, they believe
they have found all asteroids
518
00:38:55,124 --> 00:38:58,878
large enough to cause
a similar mass extinction event.
519
00:38:59,837 --> 00:39:01,381
And while none
of these present
520
00:39:01,422 --> 00:39:04,509
any immediate danger,
there are thousands of
521
00:39:04,550 --> 00:39:08,513
smaller objects which
could cause major destruction
522
00:39:08,554 --> 00:39:10,515
if they impacted the Earth.
523
00:39:10,556 --> 00:39:14,769
♪♪♪
524
00:39:15,894 --> 00:39:18,731
Recently,
a 100-foot-wide lump of rock
525
00:39:18,772 --> 00:39:22,777
called 2024-YR4 was spotted
526
00:39:22,818 --> 00:39:25,071
on a near-collision
course with Earth.
527
00:39:25,904 --> 00:39:28,908
It will miss us,
but only by luck.
528
00:39:31,493 --> 00:39:34,163
Few scientists believe
that watching the skies
529
00:39:34,204 --> 00:39:37,124
and hoping for the best
is a winning strategy.
530
00:39:38,500 --> 00:39:42,713
So, in 2021, NASA launched DART,
531
00:39:43,797 --> 00:39:47,218
a prototype of a new planetary
defense system,
532
00:39:48,260 --> 00:39:51,263
its aim was to smash
into the side of an asteroid
533
00:39:52,181 --> 00:39:55,601
and prove threats like
these could be neutralized,
534
00:39:57,019 --> 00:39:59,021
if we spotted them in time.
535
00:39:59,646 --> 00:40:01,524
[epic music]
536
00:40:01,565 --> 00:40:05,736
♪♪♪
537
00:40:07,070 --> 00:40:09,782
The mission succeeded.
538
00:40:10,616 --> 00:40:14,829
♪♪♪
539
00:40:14,870 --> 00:40:16,706
While some human technology may
540
00:40:16,747 --> 00:40:18,958
pose a threat
to life on Earth...
541
00:40:20,083 --> 00:40:23,754
breakthroughs like the
DART program could be what
542
00:40:23,795 --> 00:40:25,965
saves many species,
543
00:40:27,382 --> 00:40:29,135
including our own,
544
00:40:29,635 --> 00:40:32,722
from going
the way of the dinosaurs.
545
00:40:32,763 --> 00:40:37,268
♪♪♪
546
00:40:38,101 --> 00:40:41,856
♪ I see trees of green ♪
547
00:40:42,523 --> 00:40:44,984
♪ Red roses too ♪
548
00:40:45,567 --> 00:40:48,571
♪ I watch them bloom ♪
549
00:40:48,612 --> 00:40:50,865
♪ For me and you ♪
550
00:40:50,906 --> 00:40:54,034
♪ And I think to myself ♪
551
00:40:55,077 --> 00:41:01,792
♪ What a wonderful world ♪
552
00:41:01,833 --> 00:41:06,005
♪ Yes, I think to myself ♪
553
00:41:07,089 --> 00:41:11,469
♪ What a wonderful world ♪
554
00:41:11,510 --> 00:41:14,680
♪♪♪
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