標題: Concrete: The material that's 'too vast to imagine' [打印本頁] 作者: geemong 時間: 2021-7-2 15:25 標題: 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.作者: twman19 時間: 2021-7-6 20:54
