Magnus Larsson: Turning dunes into architecture

83,170 views ・ 2009-11-26

TED


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Translator: Helena Bedalli Reviewer: Dita Bytyci
00:15
It's a bit funny to be
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Eshte zbavitese te jesh
00:17
at a conference dedicated to things not seen,
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ne nje konference qe i kushtohet gjerave qe s'i sheh,
00:19
and present my proposal to build
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dhe te prezantoj projektin tim per te ndertuar
00:22
a 6,000-kilometer-long wall
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nje mur 6000 km te gjate
00:24
across the entire African continent.
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mespermes kontinentit Afrikan.
00:27
About the size of the Great Wall of China,
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Afersisht sa Muri i Madh Kinez,
00:30
this would hardly be an invisible structure.
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do te jete veshtire te jete i padukshem.
00:32
And yet it's made from parts that are invisible, or near-invisible, to the naked eye:
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Dhe prapeseprape eshte bere nga pjese qe jane te padukshme ndaj syrit te njeriut:
00:37
bacteria and grains of sand.
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bakterie dhe grimca rere.
00:40
Now, as architects we're trained to solve problems.
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Si arkitekte, jemi trajnuar te zgjidhim probleme.
00:43
But I don't really believe in architectural problems;
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Por une nuk besoj ne problemet arkitekturale;
00:45
I only believe in opportunities.
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Une besoj vetem ne mundesite.
00:47
Which is why I'll show you a threat,
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Prandaj po ju tregoj kete, nje kercenim,
00:49
and an architectural response.
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dhe nje pergjigje arkitekturale.
00:51
The threat is desertification.
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Kercenimi eshte shkreterizimi.
00:55
My response is a sandstone wall
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Pergjigja ime eshte nje mur guri ranor
00:58
made from bacteria and solidified sand,
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i bere nga bakteria dhe rera e kalcifikuar,
01:00
stretching across the desert.
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qe shtrihet mespermes shkretetires.
01:04
Now, sand is a magical material
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Rera eshte nje material magjik
01:06
of beautiful contradictions.
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me kontradikta te medha.
01:08
It is simple and complex.
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Eshte e thjeshte dhe komplekse.
01:11
It is peaceful and violent.
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Eshte paqesore dhe violente.
01:13
It is always the same, never the same,
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Eshte gjithmone njesoj, asnjehere njesoj,
01:15
endlessly fascinating.
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nje mrekulli pa fund.
01:17
One billion grains of sand
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Nje miliard kokriza rere
01:19
come into existence in the world each second.
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krijohen ne bote ne cdo sekonde.
01:23
That's a cyclical process.
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Ky eshte nje proces i mbyllur.
01:25
As rocks and mountains die,
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Ndersa guret dhe malet shkaterrohen,
01:27
grains of sand are born.
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grimcat e reres formohen.
01:29
Some of those grains may then cement naturally into sandstone.
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Disa nga keto kokrriza mund te cimentohen natyralisht ne gurin ranor.
01:32
And as the sandstone weathers, new grains break free.
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Dhe, gjate erozionit te gurit ranor, clirohen grimca te reja.
01:36
Some of those grains may then accumulate
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Disa nga keto mund akumulohen perseri
01:38
on a massive scale,
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ne shkalle te gjere
01:40
into a sand dune.
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ne nje dune rere.
01:43
In a way, the static, stone mountain
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Keshtu, malet e gurit, te palevizshem,
01:46
becomes a moving mountain of sand.
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behen male te levizshem rere.
01:49
But, moving mountains can be dangerous. Let me try and explain why.
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Por, malet e levizshem jane te rrezikshem. T'ua shpjegoj sepse.
01:53
Dry areas cover more than one third of the Earth's land surfaces.
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Zonat e thata mbulojne me shume se nje te treten e siperfaqes tokesore teTokes.
01:57
Some are already deserts;
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Disa jane shkreterira tashme;
01:59
others are being seriously degraded by the sand.
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te tjerat po degradohen seriozisht nga rera.
02:02
Just south of the Sahara we find the Sahel.
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Tamam ne jug te Saharase kemi Sahel.
02:05
The name means "edge of the desert."
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Emri do te thote "fundi i shkretetires"
02:08
And this is the region most closely associated with desertification.
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Dhe kjo eshte zona me e prekur nga shkreterizimi.
02:12
It was here in the late '60s and early '70s
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Ne fund te viteve 60 fillim 70 ne kete vend
02:15
that major droughts brought three million people
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thatesira e madhe solli qe 3 milion njerez
02:18
to become dependent upon emergency food aid,
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te varen nga ndihmat ushqimore te emergjences,
02:21
with about up to 250,000 dying.
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dhe rreth 250000 vdiqen.
02:23
This is a catastrophe waiting to happen again.
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Kjo katastrofe pritet te ndodhe perseri.
02:26
And it's one that gets very little attention.
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Dhe i kushtohet shume pak vemendje.
02:29
In our accelerated media culture,
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Ne kulturen tone te medias se pershpejtuar,
02:31
desertification is simply too slow
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shkreterizimi eshte thjesht shume i ngadalshem
02:34
to reach the headlines.
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te arrije ne titujt.
02:36
It's nothing like a tsunami or a Katrina:
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Nuk eshte si cunami apo Katrina:
02:39
too few crying children and smashed up houses.
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ca femije qe qajne dhe shtepi te shkaterruara.
02:44
And yet desertification
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Dhe prape shkreterizimi
02:46
is a major threat on all continents,
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eshte nje kercenim i madh ne te gjitha kontinentet,
02:48
affecting some 110 countries
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duke prekur 110 shtete
02:51
and about 70 percent of the world's agricultural drylands.
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dhe 70 perqind te tokave buqesore te thata ne bote.
02:56
It seriously threatens the livelihoods
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Eshte kercenim serioz per jetesen
03:00
of millions of people,
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e miliona njerezve,
03:02
and especially in Africa and China.
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vecanerisht ne Afrike dhe Kine.
03:05
And it is largely an issue that we've created for ourselves
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Eshte nje problem qe ia kemi krijuar vetes
03:08
through unsustainable use of scarce resources.
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nepermjet perdorimit te paqendrueshem te burimeve te pakta.
03:12
So, we get climate change.
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Papritmas kemi ndryshimin e klimes.
03:14
We get droughts,
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Kemi thatesire,
03:15
increased desertification,
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shkreterizim te pershpejtuar,
03:17
crashing food systems, water scarcity,
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shkaterrimin e sistemit te ushqimit, mungese uji,
03:20
famine, forced migration,
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urine, levizjen e detyruar,
03:24
political instability, warfare, crisis.
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pastabilitetin politik, luften, krizen.
03:28
That's a potential scenario
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Ky eshte skenari politik
03:30
if we fail to take this seriously.
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nese deshtojme ta marrim seriozisht kete.
03:32
But, how far away is it?
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Por, sa larg eshte?
03:34
I went to Sokoto in northern Nigeria
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Une vajta ne Sokoto ne Nigerine e veriut
03:36
to try and find out how far away it is.
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me qellim qe te kuptoja sa larg eshte.
03:39
The dunes here move southward at a pace of around 600 meters a year.
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Dunat ketu zhvendosen drejt jugut me nje ritem rreth 600 metra ne vit.
03:44
That's the Sahara eating up almost [two meters] a day of the arable land,
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Ne kete menyre Saharaja po mbulon gati 2 metra ne dite te tokes se lerueshme,
03:47
physically pushing people away from their homes.
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duke i shtyre fizikisht njerezit nga shtepite e tyre.
03:51
Here I am -- I'm the second person on the left --
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Ja ku jam une --i dyti ne te majte--
03:54
(Laughter)
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(Te qeshura)
03:56
with the elders in Gidan-Kara,
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me te vjetrit ne Gidan-Kara,
03:59
a tiny village outside of Sokoto.
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nje fshat i vogel jashte Sokoto.
04:02
They had to move this village in 1987
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Atyre iu desh ta zhvendosnin fshatin ne 1987
04:04
as a huge dune threatened to swallow it.
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ndersa nje dune kercenonte ta mbulonte ate.
04:07
So, they moved the entire village, hut by hut.
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Keshtu, ata levizen te gjithe fshatin, kasolle mbas kasolle.
04:10
This is where the village used to be.
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Ketu ka qene me pare.
04:12
It took us about 10 minutes to climb up to the top of that dune,
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Na u desh 10 minuta te arrinim ne maje te dunes,
04:17
which goes to show why they had to move to a safer location.
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qe tregon sepse ata duhet te zhvendoseshin ne nje vend me te sigurt.
04:20
That's the kind of forced migration
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Ky eshte nje lloj levizje e detyruar
04:22
that desertification can lead to.
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qe drejtohet nga shkreterizimi
04:25
If you happen to live close to the desert border,
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Nese jetoni afer kufirit te shkreterires,
04:27
you can pretty much calculate how long it will be
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mund te llogarisni disi sa kohe duhet
04:29
before you have to carry your kids away,
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para se te merrni femijet me vete,
04:31
and abandon your home and your life as you know it.
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dhe abandoni shtepine dhe jeten qe njhni.
04:36
Now, sand dunes cover only about one fifth of our deserts.
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Dunat e reres mbulojne vetem nje te pesten e shkretetirave.
04:40
And still, those extreme environments are very good places
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Dhe prape, keto ambjente ekstreme jane vende shume te mira
04:43
if we want to stop the shifting sands.
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nese duam te ndalojme zhvendosjen e rerave.
04:46
Four years ago, 23 African countries
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kater vjet me pare, 23 vende Afrikane
04:49
came together to create the Great Green Wall Sahara.
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u mblodhen per te krijuar Murin e madh te Gjelbert te Sahares.
04:52
A fantastic project, the initial plan
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Nje projekt fantastik, plani fillestar
04:55
called for a shelter belt of trees to be planted
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propozonte nje brez mbrojtes pemesh qe do mbilleshin
04:57
right across the African continent,
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mespermes kontinentit Afrikan.
04:59
from Mauritania in the west, all the way to Djibouti in the east.
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nga Mauritania ne perendim, deri ne Djibouti ne lindje.
05:03
If you want to stop a sand dune from moving,
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Nese do te ndalosh nje dune rere te zhvendoset,
05:05
what you need to make sure to do is to stop the grains
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duhet te sigurosh qe ke ndaluar grimcat
05:07
from avalanching over its crest.
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qe te rrokullisen nga maja.
05:10
And a good way of doing that, the most efficient way,
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Dhe nje menyre e mire per kete, me eficientja,
05:12
is to use some kind of sand catcher.
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eshte te perdoret dicka qe e kap reren.
05:14
Trees or cacti are good for this.
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Pemet ose kaktuset e bejne mire.
05:17
But, one of the problems with planting trees is that
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Por, nje nga problemet me mbjelljen e pemeve, eshtge qe
05:20
the people in these regions are so poor
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njerezit ne keto zona jane aq te varfer
05:22
that they chop them down for firewood.
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sa i presin ato per dru zjarri.
05:24
Now there is an alternative to just planting trees
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Por, ka nje alternative ndaj vetem mbjelljes se pemeve
05:28
and hoping that they won't get chopped down.
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dhe shpreses qe nuk ato do te priten.
05:31
This sandstone wall that I'm proposing essentially does three things.
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Ky mur guri ranor qe propozoj ben kryesisht 3 gjera.
05:34
It adds roughness to the dune's surface,
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I shton ashpersine siperfaqes se dunes,
05:37
to the texture of the dune's surface, binding the grains.
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tekstures se saj, duhe ngurtesuar grimcat.
05:40
It provides a physical support structure for the trees,
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Krijon nje strukture mbeshtetese fizike per pemet,
05:43
and it creates physical spaces,
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dhe krijon hapsira fizike,
05:46
habitable spaces inside of the sand dunes.
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te banueshme brenda dunave te reres.
05:48
If people live inside of the green barrier
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Nese njerezit jetojne brenda barieres se gjelbert
05:51
they can help support the trees, protect them from humans,
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ata mund t'i mbrojne pemet ndaj njerezve abuzues
05:54
and from some of the forces of nature.
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un
05:56
Inside of the dunes we find shade.
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Brenda dunave gjen hije.
05:59
We can start harvesting condensation,
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Mund te prodhosh kondensim,
06:02
and start greening the desert from within.
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dhe te gjelberosh shkretetiren nga brenda.
06:04
Sand dunes are almost like ready-made buildings in a way.
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Dunat e reres jane si ndertesa te gatshme ne nje menyre.
06:07
All we need to do is solidify the parts that we need to be solid,
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Duhet vetem te ngurtesosh pjeset qe do te jene te ngurta,
06:11
and then excavate the sand,
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me pas germon reren,
06:13
and we have our architecture.
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dhe ja ku kemi arkitekturen.
06:15
We can either excavate it by hand
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Mund te germohet me duar
06:17
or we can have the wind excavate it for us.
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ose mund ta beje era per ne.
06:19
So, the wind carries the sand onto the site
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Pra, era e sjell reren ne vend
06:21
and then it carries the redundant sand away from the structure for us.
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dhe me pas e merr reren e tepert, e largon nga struktura per ne.
06:26
But, by now, you're probably asking,
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Por, tani, ju ndoshta doni te dini,
06:28
how am I planning to solidify a sand dune?
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se si planifikoj te kalcifikoj nje dune rere?
06:31
How do we glue those grains of sand together?
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Si i ngjis keto grimca rere se bashku?
06:34
And the answer is, perhaps, that you use these guys,
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Pergjigjia eshte, ndoshta, perdorim keto,
06:37
Bacillus pasteurii,
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Bacillus pasteurii,
06:39
a micro-organism that is readily available in wetlands
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nje mikroorganizem qe eshte ne dispozicion i gatshem ne tokat e lagta
06:41
and marshes, and does precisely that.
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dhe kenetat dhe ben saktesisht kete.
06:44
It takes a pile of loose sand
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Kap nje grumbull rere te shkrifet
06:46
and it creates sandstone out of it.
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dhe e transformon ne gur ranor.
06:49
These images from the American Society for Microbiology show us the process.
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Keto figura nga Shoqeria Amerikane e Mikrobiologjise na tregojne procesin.
06:53
What happens is, you pour Bacillus pasteurii onto a pile of sand,
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Ajo qe ndodh eshte, hedh ca Bacillus pasteurii ne nje pirg rere,
06:57
and it starts filling up the voids in between the grains.
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dhe ai fillon te mbushe boshllekun midis kokrrizave.
07:00
A chemical process produces calcite,
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Nje proces kimik qe prodhon kalcite,
07:02
which is a kind of natural cement
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qe eshte nje lloj cimentoje natyrale
07:04
that binds the grains together.
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qe lidh grimcat se bashku.
07:06
The whole cementation process takes about 24 hours.
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I gjithe procesi i cimentimit zgjat 24 rreth ore.
07:10
I learned about this from a professor at U.C. Davis called Jason DeJong.
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Une u njoha me kete nga nje profesor i U.C. Davis i quajtur Jason DeJong.
07:14
He managed to do it in a mere 1,400 minutes.
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Ai arriti ta beje ne 140 minuta.
07:18
Here I am, playing the part of the mad scientist,
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Ketu jam, duke lozur rolin si shkencetar i marre
07:20
working with the bugs at UCL in London,
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duke punuar me viruset ne UCL ne Londer,
07:24
trying to solidify them.
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per ti ngurtesuar ato.
07:26
So, how much would this cost?
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Sa kushton kjo?
07:29
I'm not an economist, very much not,
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S'jam ekonomist. aspak,
07:31
but I did, quite literally, a back of the envelope calculation --
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por bera, nje llogaritje shpejt e shpejt--
07:35
(Laughter)
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(Te qeshura)
07:37
-- and it seems that for a cubic meter of concrete
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--dhe duket sikur per nje meter kubik beton
07:40
we would have to pay in the region of 90 dollars.
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na duhet te paguajme aty te 90 dollaret.
07:43
And, after an initial cost of 60 bucks to buy the bacteria,
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Dhe, pas nje kostoje fillestare 60 dollare per te blere bakterien,
07:46
which you'll never have to pay again,
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qe nuk kemi per te paguar me,
07:48
one cubic meter of bacterial sand
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nje meter kubik gur ranor
07:51
would be about 11 dollars.
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do te jete rreth 11 dollare.
07:53
How do we construct something like this?
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Si e ndertojme dicka te tille?
07:55
Well, I'll quickly show you two options.
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Do tju tregoj dy mundesi.
07:57
The first is to create a kind of balloon structure,
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E para duke krijuar nje lloj strukture si tollumbac
07:59
fill it with bacteria, then allow the sand to wash over the balloon,
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te mbushur me baktere, e le reren te grumbullohet mbi tollumbac,
08:03
pop the balloon, as it were, disseminating the bacteria into the sand and solidifying it.
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e plas ate, sic eshte, duke shperndare bakteret ne rere dhe ngurtesuar ate.
08:07
Then, a few years afterwards,
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Me pas, ca vjet me vone,
08:09
using permacultural strategies,
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duke perdorur strategji permakulturale,
08:11
we green that part of the desert.
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e gjelberojme ate pjese te shkretetires.
08:14
The second alternative would be to use injection piles.
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Alternativa e dyte eshte me tuba injeksioni.
08:17
So, we pushed the piles down through the dune,
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Pra, i fusim tubat ne brendesi te dunes,
08:19
and we create an initial bacterial surface.
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dhe krijojme nje siperfaqe bakteriale fillestare.
08:22
We then pull the piles up through the dune
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Me pas i terheqim tubat mbi dune
08:25
and we're able to create almost any conceivable shape inside of the sand
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dhe jemi ne gjendje te krijojme gati cdo forme te konceptueshme brenda reres
08:28
with the sand acting as a mold as we go up.
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me reren qe vepron si forme ndersa i terheqim lart.
08:32
So, we have a way of turning sand into sandstone,
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Kemi keshtu nje menyre per te transformuar reren ne gur ranor,
08:36
and then creating these habitable spaces inside of the desert dunes.
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dhe per te krijuar hapsira te banueshme brenda dunave te shkretetires.
08:40
But, what should they look like?
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Por, si do te dukeshin ato?
08:42
Well, I was inspired, for my architectural form, by tafoni,
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Per formen arkitektonike, une u frymezova nga tafoni,
08:47
which look a little bit like this, this is a model representation of it.
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qe duket pak a shume keshtu, ky eshte nje model i paraqitur i tij.
08:50
These are cavernous rock structures that I found on the site in Sokoto.
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Keto jane struktura shpellash guri qe gjeta ne vend ne Sokoto.
08:53
And I realized that if I scaled them up, they would provide me
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Dhe kuptova qe, nese i zmadhoja, ato mund te krijojne
08:56
with good spatial qualities,
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kushte te mira hapsinore
08:59
for ventilation, for thermal comfort, and for other things.
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per ventilim, konfort termal dhe gjera te tjera.
09:02
Now, part of the formal control over this structure
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Ne realitet, nje pjese e kontrollit mbi strukturen
09:05
would be lost to nature, obviously,
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do tja leme natyres, natyrisht,
09:07
as the bacteria do their work.
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ndersa bakteria ben punen e vet.
09:10
And I think this creates a kind of boundless beauty actually.
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Mendoj qe kjo krijon vertet nje bukuri te pafund.
09:13
I think there is really something in that articulation
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Ka dicka ne ate artikulacion
09:16
that is quite nice.
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qe eshte shume terheqese.
09:18
We see the result, the traces, if you like,
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Ne shikojme rezultatet, gjurmet,
09:22
of the Bacillus pasteurii being harnessed to sculpt the desert
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qe le Bacillus pasteuri duke skulpturuar shkretetiren
09:25
into these habitable environments.
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ne keto hapsira te banueshme.
09:27
Some people believe that
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Disa njerez besojne qe
09:30
this would spread uncontrollably,
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kjo do te shperndahet ne menyre te pakontrolluar,
09:32
and that the bacteria would kill everything in its way.
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dhe gjate rruges, bakteria do te vrase gjithshka.
09:34
That's not true at all.
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Kjo s'eshte fare e vertete.
09:36
It's a natural process. It goes on in nature today,
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Ky eshte nje proces natyral. Po ndodh ne natyre tashme,
09:38
and the bacteria die as soon as we stop feeding them.
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dhe bakteriet vdesin sapo ndalojme se ushqyeri ato.
09:41
So, there it is --
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Pra, kjo eshte--
09:43
architectural anti-desertification structures
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struktura arkitekturale anti-shkreterizuese
09:46
made from the desert itself.
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te bera nga vete shkretetira.
09:48
Sand-stopping devices, made from sand.
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Pajisje rere-ndaluese, te bera nga rera.
09:52
The world is likely to lose one third of its arable land
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Bota duket sikur do te humbase nje te treten e tokes te punueshme
09:55
by the end of the century.
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deri ne fund te shekullit.
09:57
In a period of unprecedented population growth
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Ne nje periudhe te rritjes se paparashikuar te popullsise
10:01
and increased food demands, this could prove disastrous.
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dhe rritjes se kerkeses per ushqim, kjo mund te jete katastrofike.
10:03
And quite frankly, we're putting our heads in the sand.
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Dhe sinqerisht, po fshehim koken si struci ne rere.
10:07
If nothing else, I would like for this scheme to initiate a discussion.
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Te pakten, do te doja qe ky projekt te fillonte nje diskutim.
10:12
But, if I had something like a TED wish,
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Por, nese do te shprehja nje deshire per TED,
10:14
it would be to actually get it built,
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do te ishte qe te ndertohej vertet,
10:16
to start building this habitable wall,
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te fillonte te ndertohej ky mur i banueshem,
10:19
this very, very long, but very narrow city in the desert,
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ky qytet shume shume i gjate dhe shume i ngushte ne shkretetire,
10:23
built into the dunescape itself.
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i ndertuar ne peisazhin e reres.
10:27
It's not only something that supports trees,
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Nuk eshte vetem per te mbeshtetur pemet,
10:30
but something that connects people and countries together.
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por dicka qe bashkon njerezit dhe kombet se bashku.
10:34
I would like to conclude by showing you an animation of the structure,
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Dua te perfundoj me nje animacion te struktures,
10:40
and leave you with a sentence by Jorge Luis Borges.
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dhe tju le me nje fraze nga Jorge Luis Borges.
10:46
Borges said that "nothing is built on stone,
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Borges ka thene qe "asgje s'eshte ndertuar ne gur,
10:52
everything is built on sand,
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cdo gje eshte ndertuar ne rere,
10:56
but we must build as if the sand were stone."
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por ne duhet te ndertojme sikur rera te jete gur."
11:01
Now, there are many details left to explore in this scheme --
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Tani, ka shume detaje qe akoma duhet te eksplorohen ne kete projekt
11:05
political, practical, ethical, financial.
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politike, praktike, etike, financiare.
11:10
My design, as it takes you down the rabbit hole,
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Projekti im, ndersa do ti futemi thelle,
11:15
is fraught with many challenges
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ne realitet eshte plot me sfida
11:19
and difficulties in the real world.
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dhe veshtiresi.
11:22
But, it's a beginning, it's a vision.
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Por, eshte nje fillim, eshte nje vizion.
11:26
As Borges would have it, it's the sand.
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Sic Borges do te thoshte, eshte rera.
11:30
And I think now is really the time
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Une besoj se ka ardhur koha
11:33
to turn it into stone. Thank you.
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ta transformojme ate ne gur. Falemnderit.
11:36
(Applause)
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(Duartrokitje)
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