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Concrete: The material that's 'too vast to imagine'

Concrete: The material that's 'too vast to imagine'

本帖最後由 geemong 於 2021-7-2 15:26 編輯

Concrete: The material that's 'too vast to imagine'



There is so much concrete in ดาวน์โหลด SLOTXO the world that soon it will outweigh
all living matter – including us. In the latest in our Anthropo-Scene series, we explore
the material's global reach, occasional beauty, and unimaginable scale.

ages of human history have often been named after the materials that our ancestors
mastered at that time: stone, bronze or iron.

If future archaeologists do the same for us, what material might they choose to
define the 21st Century? Silicon? Plastic? Both are candidates, shaping the world
for better and for worse. But if the decision were based on scale alone, then there
can be only one answer: we are living in the age of concrete.

There are few human-made substances on Earth that are quite so ubiquitous.
Concrete is what the philosopher-ecologist Timothy Morton calls a "hyperobject" –
something so enormous and widespread that it cannot be fully contemplated with
the mental faculties that we have. If you attempt to picture the entirety of the world's
concrete in the mind's eye, you soon realise that it's impossible.

However, Emily Elhacham of the Weizmann Institute of Science and colleagues
recently attempted to give it a shot. Their goal was to better understand humanity's
impact during the Anthropocene by totting up the weight of all inanimate human-
made objects on Earth. As part of their calculations, they found that concrete
accounts for around half of all human-made things – the single biggest category of
anthropogenic material. And if its rate of growth continues, it will overtake the total
weight of Earth's biomass sometime around 2040.

Try to picture that in the mind's eye: there is a day approaching soon when there
will be a greater weight of concrete on Earth than every single tree in every forest,
every fish in every sea, every farm animal in every field, and every person alive
right now.

How to make sense of this scale? When we encounter an outcrop of granite or
limestone, poking out at the surface, its presence can hint at a far deeper and
vaster bedrock beneath. We can take the same approach with a single concrete
building, wall or slab – each individual instance can be approached as merely
the local emergence of a material with an unseen and unimaginable geological
reach.

So, in this edition of BBC Future's photographic series Anthropo-Scene, we decided
to tour a selection of what you might call concrete "outcrops". Each visual example
from around the world can help us to  understand the material – and our relationship
with it – a little more clearly.
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美國黑金功效真的可以提升勃起硬度嗎?
犀利士功效與作用你知道多少?
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威而鋼吃半顆有用嗎?
樂威壯真假如何分辨?
犀利士心得 ptt分享
威而鋼怎麼吃更安全有效?
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網路威而鋼購買有哪些注意事項?
保羅v8功效到底怎麼樣?
吃必利勁治療早洩會頭暈是真的嗎?
服用威而鋼期間可以懷孕嗎?


犀利士   
犀利士藥局  
犀利士5mg   
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犀利士ptt   
犀利士學名藥   
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犀利士藥效  
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犀利士5mg   
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犀利士學名藥   
威而鋼犀利士   
犀利士各向異性  
犀利士藥效
犀利士購買
威而鋼  
威爾剛
偉哥
威而鋼藥局   
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丁丁藥局威而鋼價格   
丁丁藥局威而鋼  
犀利士威而鋼一起吃


必利吉   
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必利吉藥效   
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樂威壯  
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樂威壯口溶錠   
樂威壯價格   
樂威壯心得   
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達泊西汀  
必利勁藥局
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早洩藥物
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必利勁台灣   
2h2d   
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2h2d金尊版  
2h2d副作用


持久藥  
生精片  
香港老中醫補腎丸    
享硬瑪卡濃縮片   
威而鋼  
希愛力   
美國黃金偉哥  
2h2d持久液    
德國必邦功效    
日本騰素正品   
一想就硬    
樂威壯  
美國黑金  
maxman    
必利勁    
必利吉   
綠騎士持久液    
一炮到天亮    
美國goodman    
韓國奇力片    
美國保羅V8   
德國黑金剛持久液
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