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My name is Francis Hall?.
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00:01:18,360 --> 00:01:20,567
I've spent my life in forests,
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watching trees be born,
grow and die.
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00:01:26,080 --> 00:01:28,242
As I couldn't see them growing,
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00:01:28,360 --> 00:01:30,886
I presumed they were immobile.
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00:01:32,160 --> 00:01:34,242
Because I couldn't hear them,
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00:01:34,360 --> 00:01:36,727
I imagined they were silent.
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00:01:38,240 --> 00:01:39,526
Over time.
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00:01:39,960 --> 00:01:43,043
I discovered
they were prodigiously alive.
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00:02:57,620 --> 00:03:00,783
When I first became a bolnnist,
I never imagined
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00:03:00,900 --> 00:03:04,302
that the great tropical forests
would vanish before my eyes
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00:03:04,420 --> 00:03:06,468
in barely 50 Year?'-.
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00:03:07,660 --> 00:03:09,788
They were so huge...
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00:03:19,220 --> 00:03:23,430
Millions of years ago, we were born
in the highest branches of the canopy
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00:03:23,540 --> 00:03:25,304
but we have forgotten that.
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00:03:35,500 --> 00:03:37,741
Before it's too late, I would like
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00:03:37,860 --> 00:03:40,864
to share this lifetime journey with you.
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00:03:40,980 --> 00:03:43,221
Tell you about my great passion,
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00:03:43,860 --> 00:03:47,831
the story of the trees
of the great tropical forests.
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00:06:20,660 --> 00:06:25,427
ONCE UPON A FOREST
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00:06:53,300 --> 00:06:55,871
I have visited
all the world's forests.
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00:06:55,980 --> 00:06:58,187
I have walked on the canopy.
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00:06:58,300 --> 00:07:01,144
I have explored miles of undergrowth.
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00:07:01,260 --> 00:07:02,307
At all times,
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00:07:03,020 --> 00:07:06,149
I was amazed
by the great trees' ability
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00:07:07,602 --> 00:07:09,441
to live without moving.
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00:07:10,689 --> 00:07:13,572
How many times
have these wooden beings
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00:07:13,692 --> 00:07:16,741
challenged my own intelligence?
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00:07:19,137 --> 00:07:22,436
To live... without moving.
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00:07:23,433 --> 00:07:26,197
They have invented
another way of being alive,
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00:07:26,311 --> 00:07:28,150
almost imperceptible.
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00:07:28,855 --> 00:07:33,197
The mysterious universe of plant genius.
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00:07:48,875 --> 00:07:50,796
In the tropical primary forest,
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00:07:51,753 --> 00:07:55,300
I have seen our world's
greatest beauties and riches.
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00:07:56,383 --> 00:07:58,968
Billions of plants, billions of animals,
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00:07:59,094 --> 00:08:03,565
all mutually indispensable,
intimately connected,
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00:08:03,681 --> 00:08:07,395
sometimes so close
that they end up blending.
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00:09:20,925 --> 00:09:24,805
I have seen men seize ancient trees
in just days.
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00:09:25,722 --> 00:09:28,652
In no time at all,
one can destroy, take, collect
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00:09:28,766 --> 00:09:30,190
and chop them down.
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00:09:31,769 --> 00:09:34,273
Yet how many centuries
are needed to rebuild?
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00:10:20,735 --> 00:10:23,204
How can the process be reversed?
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00:10:24,323 --> 00:10:27,370
This feeling of helplessness
fills me with anger
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00:10:28,660 --> 00:10:30,250
and sadness.
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00:10:35,583 --> 00:10:37,422
Since the dawn of time,
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00:10:37,543 --> 00:10:41,008
plants have given us
the air that we breathe.
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00:10:41,756 --> 00:10:44,936
Must they vanish
for us to remember that?
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00:10:50,140 --> 00:10:52,311
Who can recreate life?
49
00:10:53,601 --> 00:10:54,894
Life alone.
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00:10:55,394 --> 00:10:57,317
It's a matter of time.
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00:12:56,558 --> 00:13:01,197
The great trees that lived here
have sown a multitude of seeds,
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00:13:01,312 --> 00:13:05,109
season after season, just in case.
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00:13:05,942 --> 00:13:10,747
The shade of the undergrowth acted
like a sleeping spell on them.
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00:13:10,864 --> 00:13:13,913
They will now mend
the mutilated forest.
55
00:13:14,034 --> 00:13:17,830
Light invites them
to begin the story anew.
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00:13:29,340 --> 00:13:33,516
The forest will outlive us.
It has the power of rebirth.
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00:13:33,636 --> 00:13:37,267
But only if men leave it in peace
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00:13:37,390 --> 00:13:39,609
for more than seven centuries.
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00:13:41,436 --> 00:13:44,782
This is where
the tale of a rebirth begins.
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00:14:14,845 --> 00:14:16,850
These trees are pioneers.
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00:14:16,972 --> 00:14:19,985
They grow rapidly. They are all alike.
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00:14:31,569 --> 00:14:33,372
In a few days, they sprout.
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00:14:34,238 --> 00:14:38,580
In a few months,
they shelter the ground with their leaves.
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00:14:39,494 --> 00:14:41,581
Water, air and sun
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00:14:42,080 --> 00:14:44,085
enter the pioneers' leaves.
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00:14:44,207 --> 00:14:46,047
Chlorophyll transforms them.
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00:14:46,167 --> 00:14:48,753
A huge being rises up.
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00:14:48,879 --> 00:14:50,599
A tree!
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00:14:51,130 --> 00:14:52,887
The miracle of photosynthesis.
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00:15:07,313 --> 00:15:09,283
In their rush towards the sun,
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00:15:09,399 --> 00:15:12,246
the pioneers cannot create defences
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00:15:12,360 --> 00:15:16,287
to fight the herbivores
that attack their first leaves.
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00:15:18,282 --> 00:15:21,830
And when its damaged leaves
cannot capture the light,
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00:15:21,953 --> 00:15:25,085
the tree dies, deprived of energy.
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00:15:34,215 --> 00:15:39,388
To repel attacks, certain pioneers
call animals to the rescue.
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00:15:40,639 --> 00:15:43,486
When Cecropia grows a new leaf,
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00:15:43,600 --> 00:15:48,523
things that look just like ant eggs
appear at its base.
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00:15:49,940 --> 00:15:51,695
The result is instant.
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00:15:59,616 --> 00:16:03,329
The ants open small doors
created by the tree
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00:16:03,453 --> 00:16:05,209
along its stem.
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00:16:24,891 --> 00:16:27,227
The ants make themselves at home.
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00:16:27,352 --> 00:16:30,069
They bore openings between each level.
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00:16:31,105 --> 00:16:35,281
The insects soon occupy Cocropia
mror its full height.
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00:16:42,492 --> 00:16:45,125
Cecropia can grow in peace.
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00:16:45,244 --> 00:16:48,673
Its tenants ensure its defence.
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00:18:05,909 --> 00:18:09,171
50 years
after the first seeds germinate,
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00:18:09,287 --> 00:18:11,708
the pioneers reach maturity.
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00:18:11,832 --> 00:18:14,002
They won't live any longer.
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00:18:14,542 --> 00:18:16,548
Born at the same time,
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00:18:16,670 --> 00:18:18,722
they die together.
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00:18:18,839 --> 00:18:23,595
The brevity of their existence
is inscribed in their genes.
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00:19:12,267 --> 00:19:15,316
The minute fauna hidden in the ground
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00:19:15,437 --> 00:19:17,524
turns this forest of dead wood
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00:19:17,647 --> 00:19:19,983
into a rich, loose humus.
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00:19:20,108 --> 00:19:22,789
This is the unsettling world
of the deoomposers.
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00:19:22,902 --> 00:19:25,406
They digest everything
that falls to the ground
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00:19:25,530 --> 00:19:28,211
to return it to the cycle of life.
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00:19:36,165 --> 00:19:37,423
The secondary forest
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replaces the primary one.
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00:19:40,044 --> 00:19:42,631
Its trees sprouted
in the pioneers' shade.
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00:19:43,131 --> 00:19:45,848
They are nourished
by their fallen wood.
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00:19:45,967 --> 00:19:50,143
Thus begins the second stage
in the forests reconstruction.
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00:19:50,597 --> 00:19:52,400
It will lake several centuries
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00:19:53,141 --> 00:19:56,320
to put back together the huge puzzle
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00:19:56,436 --> 00:19:58,904
wiped out by deforestation.
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00:20:26,299 --> 00:20:30,854
Light, once again,
organises the layout of the undergrowth.
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00:20:31,304 --> 00:20:34,401
The countless leaves, like solar cells,
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00:20:34,516 --> 00:20:37,446
the branches
that raise the leaves to the sun,
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00:20:37,561 --> 00:20:40,693
the big trunks that lift the treetops
to the sky...
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00:21:43,418 --> 00:21:49,599
Being a tree means excelling
in the art of slanding, balanced.
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00:21:49,715 --> 00:21:53,892
As the branches spread,
the base of the trunk grows thicker,
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00:21:54,012 --> 00:21:56,646
strengthening the giant's foundation.
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00:22:03,980 --> 00:22:06,116
The underground world of trees
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00:22:06,232 --> 00:22:10,623
is as vast and important
as the visible part.
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00:22:21,789 --> 00:22:24,293
Roots don't: really act as anchors.
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00:22:24,417 --> 00:22:26,885
They are above all water collectors.
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00:22:27,003 --> 00:22:29,886
They work with strange filaments,
fungi,
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00:22:30,006 --> 00:22:34,229
secret but key actors
in the life of the forest.
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00:23:17,929 --> 00:23:20,314
Water is vital for trees.
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00:23:20,432 --> 00:23:23,149
The fungi help the reels to collect it
121
00:23:23,268 --> 00:23:27,609
by spreading their minute tentacles
beneath the surface.
122
00:23:27,730 --> 00:23:33,497
In return, the tree shares the energy
from its aerial parts with them.
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00:23:56,843 --> 00:23:59,228
After one hundred years,
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00:23:59,346 --> 00:24:03,189
the secondary forest
is still like an empty shell.
125
00:24:03,308 --> 00:24:04,898
Over five centuries,
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00:24:05,018 --> 00:24:07,817
it will host more and more
living creatures
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00:24:07,937 --> 00:24:10,701
and a rich and varied plant life
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00:24:10,815 --> 00:24:13,402
that will connect with each other.
129
00:24:14,152 --> 00:24:17,913
The interaction begins on every level
of the undergrowth,
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00:24:18,031 --> 00:24:21,460
from the infinitely small
to the infinitely large.
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00:24:35,006 --> 00:24:39,016
Wnes spread before the undergrowth
is cast into shadow.
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00:24:43,932 --> 00:24:46,612
I find these plants phenomenal.
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00:24:46,726 --> 00:24:50,404
They don't tire themselves
making huge, sedentary trunks.
134
00:24:50,521 --> 00:24:52,740
Others do that for them.
135
00:24:57,862 --> 00:24:59,416
Discreet on the ground,
136
00:24:59,530 --> 00:25:02,414
they follow the shade of a tree's trunk.
137
00:25:02,909 --> 00:25:04,463
Having found a base,
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00:25:04,577 --> 00:25:08,670
they climb up to the sky
to gorge on the sun.
139
00:25:33,481 --> 00:25:36,447
The philodendron vine fascinates me.
140
00:25:36,567 --> 00:25:38,786
It is camou?aged by the bark
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00:25:38,903 --> 00:25:42,036
near the ground,
within reach of predators' jaws.
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00:25:42,824 --> 00:25:46,087
A few feet higher up,
it becomes exuberant,
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00:25:46,203 --> 00:25:49,050
as if it finally felt safe.
144
00:25:55,379 --> 00:25:59,091
How did this plant acquire
such a subtle strategy?
145
00:25:59,841 --> 00:26:01,928
That mystery is beyond me.
146
00:26:05,930 --> 00:26:09,277
I'm particularly fond
of the passion vine's story.
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00:26:10,060 --> 00:26:11,780
You know this plant.
148
00:26:11,895 --> 00:26:14,825
It bears the delicious passion fruit.
149
00:26:15,732 --> 00:26:19,789
Let's digress with this vine
via the great evolutionary laboratory.
150
00:26:19,903 --> 00:26:23,865
By changing the timescale,
we shall see how the forest creates
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00:26:23,990 --> 00:26:26,126
new species of passion vine.
152
00:26:42,759 --> 00:26:46,602
In the forest,
the passion vine has a single enemy,
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00:26:46,721 --> 00:26:49,023
the Heliooonius butter?y caterpillars
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00:26:49,141 --> 00:26:52,486
that have devoured its leaves
for generations.
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00:27:03,905 --> 00:27:06,124
One day, during a mutation,
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00:27:06,658 --> 00:27:09,043
a passion vine became highly toxic.
157
00:27:11,037 --> 00:27:12,460
Rid of its predators,
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00:27:12,580 --> 00:27:16,637
this new species of vine
began to prosper.
159
00:27:26,303 --> 00:27:28,936
Until a new species of caterpillar
appeared,
160
00:27:29,055 --> 00:27:31,819
immune to the vine's poison.
161
00:27:39,065 --> 00:27:42,114
The butter?y became toxic
for its predators.
162
00:27:42,235 --> 00:27:44,703
In all impunity, this new Heliooonius
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00:27:44,821 --> 00:27:47,158
started devastating passion vines.
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00:27:50,326 --> 00:27:52,960
Other species of vine then appeared
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00:27:53,079 --> 00:27:57,220
changing the shape of their leaves
to fool the butter?ies.
166
00:28:06,718 --> 00:28:08,639
The trick worked perfectly
167
00:28:08,762 --> 00:28:12,060
until the butter?y found a ?ower
whose pollen was so rich
168
00:28:12,182 --> 00:28:14,483
it was able to live much longer,
169
00:28:15,018 --> 00:28:18,731
long enough to learn to recognise
the passion wine's disguised leaves.
170
00:28:26,113 --> 00:28:28,616
A new passion vine appeared.
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00:28:28,740 --> 00:28:30,542
It produced fake eggs
172
00:28:30,658 --> 00:28:34,371
to make the butter?y believe
the place was already occupied.
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00:28:49,677 --> 00:28:53,438
I'll stop there
but, in this game of to and fro,
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00:28:54,057 --> 00:28:56,607
45 species of Heliooonius butter?ies
175
00:28:56,726 --> 00:28:59,692
and 150 species of passion vines
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00:28:59,813 --> 00:29:02,067
appeared in just a few decades.
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00:29:03,399 --> 00:29:06,247
And there are millions of species
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00:29:06,360 --> 00:29:08,448
that come to life in the same way.
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00:29:08,989 --> 00:29:11,160
These countless individual stories
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00:29:11,282 --> 00:29:14,996
contribute to the history of the forest.
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00:29:50,030 --> 00:29:51,536
The yearS P955-
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The secondary forest
continues to grow.
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00:29:54,200 --> 00:29:58,044
Its trees are now around 130 feet tall.
184
00:29:58,163 --> 00:29:59,503
From the ground up,
185
00:30:00,082 --> 00:30:02,466
they offer a host of dwellings
186
00:30:02,584 --> 00:30:05,633
to countless creatures seeking
new areas to oolonise.
187
00:30:37,368 --> 00:30:40,501
Deforestation made many species ?ee.
188
00:30:41,039 --> 00:30:42,795
They return over time.
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00:30:47,129 --> 00:30:48,469
The leaf eater
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00:30:48,588 --> 00:30:50,060
attracts the ?esh eater.
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00:30:50,172 --> 00:30:53,637
The food chain gradually forms anew.
192
00:31:53,486 --> 00:31:57,662
Some new arrivals play a key role
in the foresfs rebirth.
193
00:31:59,200 --> 00:32:00,791
From distant lands,
194
00:32:00,911 --> 00:32:05,466
they bring the seeds of trees
that didn't survive destruction.
195
00:32:07,124 --> 00:32:09,047
Through such twists of fate,
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00:32:09,168 --> 00:32:11,256
the forest recovers
some of its gems
197
00:32:12,213 --> 00:32:17,219
like the moabi, the most beautiful
of the great tropical trees.
198
00:32:20,054 --> 00:32:24,895
This seed contains the promise
of a 220-foot giant.
199
00:32:25,769 --> 00:32:27,856
The first seconds
200
00:32:27,980 --> 00:32:31,028
of a creature that will live
more than 1,000 years.
201
00:33:19,030 --> 00:33:23,372
The secondary foreslfs renewal
occurs through spectacular phenomena
202
00:33:23,493 --> 00:33:26,542
but also countless tiny events,
203
00:33:26,663 --> 00:33:28,751
repeated millions of times.
204
00:33:30,542 --> 00:33:32,879
The ?ourishing of the tall trees' tops
205
00:33:33,002 --> 00:33:37,225
sets the rhythm for the plants
and animals living below.
206
00:33:37,340 --> 00:33:39,677
Wherever there's a patch of light,
207
00:33:39,801 --> 00:33:41,853
there's a leaf to catch it.
208
00:33:41,970 --> 00:33:45,648
And wherever there's a leaf,
there's someone to covet it.
209
00:34:04,325 --> 00:34:06,580
If we were to weigh
the foresfs animals,
210
00:34:06,703 --> 00:34:08,542
the ants in their entirety
211
00:34:09,122 --> 00:34:12,550
would outdo the combined weight
of all the other animals.
212
00:34:18,423 --> 00:34:20,095
They work on every level.
213
00:34:20,801 --> 00:34:23,481
Tiny transporters,
they carry huge amounts
214
00:34:23,595 --> 00:34:27,023
of leaves and soil
between the upper and lower forest.
215
00:34:33,271 --> 00:34:36,783
As gardeners,
they grow plants in the treetops
216
00:34:36,900 --> 00:34:38,537
to make their nests.
217
00:34:45,908 --> 00:34:47,035
As farmers,
218
00:34:47,160 --> 00:34:50,791
they gather the honeydew
produced by stinging insects
219
00:34:50,913 --> 00:34:53,168
that feed on the trees' sap.
220
00:35:31,204 --> 00:35:33,006
Termites impress me.
221
00:35:33,122 --> 00:35:37,548
All day long, they decompose
huge amounts of dead wood.
222
00:35:38,127 --> 00:35:40,927
They stubbornly carry soil to the sky
223
00:35:41,047 --> 00:35:44,262
to build their fortress
high above the ground.
224
00:36:11,703 --> 00:36:14,752
From the infinitely small
to the infinitely large,
225
00:36:14,872 --> 00:36:19,428
the canvas uniting all living beings
is slowly woven.
226
00:36:21,630 --> 00:36:25,592
This canvas, as yet incomplete,
is already dense enough
227
00:36:25,717 --> 00:36:29,145
to heighten the tension
between hunter and hunted,
228
00:36:29,262 --> 00:36:31,647
for nests and dwellings to become rare,
229
00:36:31,765 --> 00:36:35,645
for the weak to migrate
to escape the strong.
230
00:36:43,652 --> 00:36:46,285
The forest now has two faces,
231
00:36:46,404 --> 00:36:49,619
one by day and one by night.
232
00:37:52,721 --> 00:37:55,568
More than anything,
I love dawn in the forest.
233
00:37:55,682 --> 00:37:59,063
This fragile moment
when the song of the day's animals
234
00:37:59,185 --> 00:38:02,234
blends with the cries
of the night creatures.
235
00:38:02,355 --> 00:38:06,033
How many of them
are hidden in the trees?
236
00:38:54,699 --> 00:38:55,909
The trees
237
00:38:56,451 --> 00:38:58,539
communicate in secret.
238
00:38:58,661 --> 00:39:00,963
Not with sounds but scents.
239
00:39:02,415 --> 00:39:05,096
Stringing scents together
as we do words,
240
00:39:05,210 --> 00:39:09,136
they send their messages
over long dislnnoes.
241
00:39:09,255 --> 00:39:11,261
Seducing, attracting.
242
00:39:11,383 --> 00:39:13,767
Rejecting or enchanting,
243
00:39:13,885 --> 00:39:16,649
their influence is considerable.
244
00:40:58,365 --> 00:41:00,120
Like all living beings.
245
00:41:00,242 --> 00:41:03,622
Trees need a mate
in order to reproduce,
246
00:41:03,745 --> 00:41:07,292
or to pass on their pollen at least.
247
00:41:07,416 --> 00:41:09,586
That's why ?owers are born.
248
00:41:12,462 --> 00:41:16,804
They charm the animal
with their shape, colour and scent.
249
00:41:17,633 --> 00:41:21,098
By hiding a little nectar
at their heart, they invite it
250
00:41:21,679 --> 00:41:23,020
to roll in their pollen.
251
00:41:25,808 --> 00:41:29,321
Then the animal moves on
to other ?owers
252
00:41:29,438 --> 00:41:32,652
carrying further and further
the precious load
253
00:41:32,774 --> 00:41:34,613
entrusted to it by the plant.
254
00:41:35,110 --> 00:41:37,162
The technique is perfect.
255
00:41:37,987 --> 00:41:42,164
The tree in bloom carries out,
remotely and discreetly,
256
00:41:42,658 --> 00:41:46,040
something that causes
so much toil and energy for animals,
257
00:41:46,788 --> 00:41:48,674
the act of mating.
258
00:42:52,020 --> 00:42:55,697
Trees do not burden themselves
with useless things.
259
00:42:56,816 --> 00:42:59,285
Flowers give way to ywna fruit
260
00:42:59,403 --> 00:43:01,656
that will grow in secret.
261
00:44:12,558 --> 00:44:15,857
When they're attacked,
trees sound the alarm.
262
00:44:19,232 --> 00:44:23,029
They release odorous signals
that elicit an instant reaction
263
00:44:23,153 --> 00:44:24,873
from their neighbours.
264
00:44:27,991 --> 00:44:31,254
Their leaves then become toxic,
bitter er repulsive.
265
00:45:25,799 --> 00:45:30,354
All the predator can do
is go elsewhere to eat.
266
00:45:48,113 --> 00:45:52,123
We find the secondary forest trees
three centuries later.
267
00:45:53,451 --> 00:45:55,587
They have become giants.
268
00:45:56,997 --> 00:46:00,460
They new fight each other
for a place in the sun.
269
00:46:01,250 --> 00:46:04,099
Putting a neighbour
in the shade kills it
270
00:46:04,212 --> 00:46:05,802
and makes it vanish.
271
00:46:07,174 --> 00:46:11,101
Some trees even engage
in a bodily struggle.
272
00:46:23,940 --> 00:46:27,571
The strangler fig seed
arrives via the air.
273
00:46:30,947 --> 00:46:33,711
While the other trees, year after year,
274
00:46:33,825 --> 00:46:36,625
grew patiently
in the dim light of the woods,
275
00:46:36,745 --> 00:46:38,832
this seed overtakes everyone.
276
00:46:38,955 --> 00:46:43,843
It sprouts on high branches,
making the most of the sun's energy.
277
00:46:48,715 --> 00:46:53,519
On sprouting, the young tree
sends its roots to the ground.
278
00:46:53,636 --> 00:46:55,190
Roots?
279
00:46:55,304 --> 00:46:59,481
Genuine lassos that immediately
weld together
280
00:46:59,601 --> 00:47:01,440
as soon as they touch.
281
00:47:09,736 --> 00:47:13,283
The struggle will last
several decades.
282
00:47:41,351 --> 00:47:43,570
The tree slowly wastes away.
283
00:47:44,228 --> 00:47:46,068
Down in the undergrowth,
284
00:47:46,189 --> 00:47:48,609
profiteers try to seize
its dead leaves
285
00:47:48,733 --> 00:47:50,738
before they touch the ground.
286
00:47:54,280 --> 00:47:56,451
For me, the basket palm
287
00:47:56,574 --> 00:47:58,745
is the most spectacular of them.
288
00:47:59,661 --> 00:48:02,460
Ittrapsallitcantocarryittoilsrools
289
00:48:03,247 --> 00:48:07,507
where the deoomposers help it
to produce ils own humus.
290
00:48:13,633 --> 00:48:16,563
So many creatures
live in the undergrowth now
291
00:48:16,678 --> 00:48:19,358
that every scrap, every particle
292
00:48:19,472 --> 00:48:23,434
is a meal opportunity
fought over in countless ways.
293
00:48:44,748 --> 00:48:47,215
The struggle comes to an end.
294
00:48:48,543 --> 00:48:51,473
The strangler fig
has dew-toured its victim.
295
00:48:52,797 --> 00:48:54,719
Taking its place in the forest,
296
00:48:54,841 --> 00:48:58,934
I't has cannibalised its wood
to make its own branches.
297
00:48:59,054 --> 00:49:00,607
It has taken its shape.
298
00:49:01,389 --> 00:49:04,521
All that remains of the vanquished
is a gaping void
299
00:49:04,643 --> 00:49:08,070
in the middle
of the vanquishefs huge trunk.
300
00:50:58,965 --> 00:51:02,311
Over time, the foresfs ceiling closes.
301
00:51:02,969 --> 00:51:07,560
On the ground, the low plants
have vanished through lack of light.
302
00:51:10,644 --> 00:51:14,949
This open undergrowth
indicates a mature forest.
303
00:51:15,064 --> 00:51:17,116
Asia! as the eye can see,
304
00:51:17,233 --> 00:51:20,994
it's hard to find two trees
of the same family.
305
00:51:21,112 --> 00:51:23,164
This is not an accident.
306
00:51:33,583 --> 00:51:35,919
Living motionless
on the same spot for centuries
307
00:51:36,961 --> 00:51:41,018
means accepting the impossibility
of ?eeing predators' attacks,
308
00:51:41,132 --> 00:51:44,478
disease and parasites
that accumulate overtime.
309
00:51:46,596 --> 00:51:49,942
The adult tree can bear all that
without too much harm
310
00:51:50,058 --> 00:51:52,478
butifilsseedsfallatilsfeet.
311
00:51:52,602 --> 00:51:54,938
They are irretrievably condemned.
312
00:52:02,070 --> 00:52:03,577
The tree's only solution
313
00:52:03,697 --> 00:52:06,116
is to scatter them
as far as possible.
314
00:52:13,998 --> 00:52:15,802
Minute vibrations spread
315
00:52:15,917 --> 00:52:17,804
through the ground for miles,
316
00:52:17,919 --> 00:52:20,637
to the feet
of a hungry, waiting animal.
317
00:52:51,453 --> 00:52:52,794
How ironic...
318
00:52:53,246 --> 00:52:56,010
The trees feed the forest creatures
319
00:52:56,124 --> 00:52:58,378
for one good reason:
320
00:52:58,501 --> 00:53:00,257
to transport their seeds.
321
00:53:00,378 --> 00:53:03,095
The fruit is merely the bait
in this ruse.
322
00:53:18,730 --> 00:53:22,111
The trees even fill their fruit
with sugar
323
00:53:22,233 --> 00:53:24,618
and delicious aromas.
324
00:53:25,820 --> 00:53:27,411
They're irresistible.
325
00:54:05,943 --> 00:54:07,367
The trick works.
326
00:54:07,820 --> 00:54:10,669
The future tree
is carried off in a huge stomach
327
00:54:10,781 --> 00:54:12,538
carried by stronq MS
328
00:54:12,659 --> 00:54:15,376
and a brain always seeking to travel.
329
00:54:17,247 --> 00:54:19,667
Some trees even make
330
00:54:19,790 --> 00:54:22,472
the ?esh stick to the fruit's stone.
331
00:54:22,586 --> 00:54:24,425
The glutlon will suck it at length
332
00:54:25,046 --> 00:54:27,515
before finally spitting it out.
333
00:54:27,632 --> 00:54:30,313
Thus the seed travels even further.
334
00:54:46,943 --> 00:54:49,826
It amuses me to think
that each forest tree
335
00:54:49,946 --> 00:54:52,627
travelled part of the way
with an animal.
336
00:54:58,830 --> 00:55:00,882
How did it end up here?
337
00:55:00,999 --> 00:55:03,336
During a hunt or a nap?
338
00:55:05,837 --> 00:55:07,889
Time is so different for trees.
339
00:55:08,381 --> 00:55:11,347
Animal life
must seem so brief to them.
340
00:55:11,926 --> 00:55:16,316
The animal rules over space,
the tree overtime.
341
00:56:10,693 --> 00:56:13,375
Trees are in fact great travellers.
342
00:56:13,821 --> 00:56:17,001
They use all the mobile forces
of the natural world.
343
00:56:17,534 --> 00:56:21,591
By water, on wings, on foot, on the wind,
344
00:56:21,704 --> 00:56:24,505
they can spread to every continent.
345
00:56:26,709 --> 00:56:30,719
I even know of trees
that can cross the oceans.
346
00:57:21,806 --> 00:57:24,393
The forest is luxuriant again.
347
00:57:24,518 --> 00:57:29,274
But it depends a great deal
on the daily tropical rain showers.
348
00:57:30,440 --> 00:57:33,987
If there are just a few days
without rain,
349
00:57:34,110 --> 00:57:37,040
the leaves begin to wither.
350
00:57:37,155 --> 00:57:40,038
Particularly those of plants
living on branches
351
00:57:40,158 --> 00:57:42,163
or trunks, far from the ground.
352
00:57:42,952 --> 00:57:45,373
They have no way to stock water.
353
00:58:02,389 --> 00:58:03,979
In the heat,
354
00:58:04,099 --> 00:58:06,151
the forest is rich with scents.
355
00:58:07,602 --> 00:58:10,070
This time, they rise to the sky.
356
00:58:14,525 --> 00:58:17,290
The trees call for rain.
357
00:59:08,746 --> 00:59:11,083
The scent molecules
trap water vapour
358
00:59:11,208 --> 00:59:13,427
hanging in the air.
359
00:59:13,543 --> 00:59:15,678
This suffices to form clouds.
360
00:59:16,587 --> 00:59:18,309
It's as if the trees
361
00:59:18,423 --> 00:59:20,759
kept the rain above their heads
362
00:59:20,884 --> 00:59:23,019
to refresh themselves at will.
363
01:01:52,202 --> 01:01:54,420
Back in the primary forest,
364
01:01:54,537 --> 01:01:56,958
exceptional trees bloom.
365
01:02:13,431 --> 01:02:17,311
They have trunks worthy
of the centuries that they have seen.
366
01:02:20,897 --> 01:02:22,320
700 years n90.
367
01:02:22,440 --> 01:02:25,952
This giant was a tiny seed.
368
01:02:41,793 --> 01:02:44,261
Trees embody time.
369
01:03:20,623 --> 01:03:23,174
The forces at work within such trees
370
01:03:23,292 --> 01:03:24,764
are considerable.
371
01:03:25,378 --> 01:03:27,135
The roots draw water,
372
01:03:28,048 --> 01:03:32,603
vessels carry it upwards
to 220 feet above the ground.
373
01:03:32,719 --> 01:03:34,605
The leaves turn it into sap
374
01:03:34,721 --> 01:03:37,271
that returns to the branches and roots.
375
01:03:40,102 --> 01:03:42,154
A tree lives through this ?ow.
376
01:03:42,270 --> 01:03:44,856
When 'n can no hanger rake water
to 'its top,
377
01:03:44,981 --> 01:03:46,618
it stops growing.
378
01:03:46,733 --> 01:03:49,318
That's the only limit to its ascent.
379
01:04:36,533 --> 01:04:39,416
The moabi is new an emergent tree,
380
01:04:39,536 --> 01:04:42,335
one of those that dominate
the forest ocean
381
01:04:43,122 --> 01:04:44,926
for over a thousand years.
382
01:05:00,640 --> 01:05:02,064
The canopy.
383
01:05:02,642 --> 01:05:04,979
The active surface
of the primary forest,
384
01:05:05,102 --> 01:05:08,816
where life abounds
like nowhere else on earth.
385
01:05:09,733 --> 01:05:12,200
Here, the forest touches the sky.
386
01:05:12,318 --> 01:05:15,700
Here, thousands of individuals
sprout, grow
387
01:05:15,822 --> 01:05:17,993
and breathe at the same time.
388
01:05:42,140 --> 01:05:45,354
Atthe end ofils life,
atreeisaworldofitsown,
389
01:05:45,477 --> 01:05:47,279
like an island.
390
01:05:47,395 --> 01:05:50,444
It's the home for hundreds
of plant species,
391
01:05:50,565 --> 01:05:53,614
occupied in turn
by hundreds of animal species,
392
01:05:53,735 --> 01:05:56,867
also inhabited by smaller creatures.
393
01:06:00,408 --> 01:06:02,247
On inking a closer look,
394
01:06:02,368 --> 01:06:05,750
we discover that these tinier worlds
395
01:06:05,872 --> 01:06:07,712
are infinitely small.
396
01:06:16,299 --> 01:06:18,351
The accumulation of these creatures
397
01:06:18,468 --> 01:06:22,561
becomes a burden that endangers
the tree's balance.
398
01:06:25,016 --> 01:06:29,655
This giant that defied gravity
for centuries is going to surrender.
399
01:09:33,121 --> 01:09:34,544
The death of great trees
400
01:09:34,664 --> 01:09:38,591
is the perfect sign
of the forests maturity.
401
01:09:39,127 --> 01:09:41,464
It reshuf?es the cards
by rutuming to the ground
402
01:09:41,588 --> 01:09:46,393
the huge quantity of matter
represented by the fallen tree.
403
01:09:46,509 --> 01:09:49,227
It also brings light
to the undergrowth
404
01:09:49,346 --> 01:09:52,193
that hadn't seen any for centuries.
405
01:10:11,868 --> 01:10:15,665
A tree that falls
is a genuine revolution.
406
01:10:17,415 --> 01:10:18,709
When it happens.
407
01:10:18,833 --> 01:10:22,795
The world of the canopy
meets that of the undergrowth.
408
01:10:22,920 --> 01:10:25,091
Despite living in the same place,
409
01:10:25,215 --> 01:10:27,302
they had never met before.
410
01:10:40,689 --> 01:10:44,236
The seeds of pioneers
were waiting in the shade.
411
01:10:44,359 --> 01:10:47,787
They instantly launch
the healing process.
412
01:10:47,904 --> 01:10:50,669
A new cycle begins.
413
01:11:14,889 --> 01:11:17,654
I've spent so many years
in forests.
414
01:11:17,767 --> 01:11:19,357
A whole human lifetime.
415
01:11:20,270 --> 01:11:23,781
Thinking in tree time
makes my head spin.
416
01:11:24,857 --> 01:11:29,199
What does the world look like
when you live so long?
417
01:11:30,322 --> 01:11:33,536
I've worked a lot, I've learned a lot
418
01:11:33,659 --> 01:11:37,086
but I've merely touched on
this world's mysteries.
419
01:11:37,203 --> 01:11:40,169
Here, I sense the power
of life's forces,
420
01:11:40,290 --> 01:11:43,054
their creativity, their whims.
421
01:11:43,627 --> 01:11:47,221
Something that goes beyond me
but whose grandeur I appreciate.
422
01:11:48,714 --> 01:11:52,013
I cannot accept the disappearance
of this world.
423
01:14:03,016 --> 01:14:05,317
My story is at its end.
424
01:14:06,186 --> 01:14:10,694
I hear the murmur of primitive peoples
fading in the undergrowth,
425
01:14:10,815 --> 01:14:15,038
carrying off the memory
of man who came from the forest.
426
01:14:15,945 --> 01:14:19,078
In the past,
we lived in peace with the trees.
427
01:14:19,199 --> 01:14:24,288
Our ancestors looked on them
as respectable and benevolent gods.
428
01:14:25,621 --> 01:14:29,679
Today, we are victims of our own might.
429
01:14:29,792 --> 01:14:31,762
Let us look at trees.
430
01:14:31,878 --> 01:14:34,263
In their motionless serenity,
431
01:14:34,381 --> 01:14:37,430
lie the roots
of what was our birthplace
432
01:14:37,550 --> 01:14:39,520
and our wisdom.
33379
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