What really happens to the plastic you throw away - Emma Bryce

4,999,698 views ・ 2015-04-21

TED-Ed


请双击下面的英文字幕来播放视频。

翻译人员: anastasia huang 校对人员: Jessie JIN
00:06
This is the story of three plastic bottles,
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这是三个空废弃塑料瓶的故事
00:09
empty and discarded.
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00:11
Their journeys are about to diverge
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它们即将分道扬镳,踏上各自的旅程,
00:13
with outcomes that impact nothing less than the fate of the planet.
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而且最终都将影响地球的命运。
00:18
But they weren't always this way.
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但故事不一定总是这样。
00:20
To understand where these bottles end up, we must first explore their origins.
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想要了解这些瓶子将去向何方,
我们必须先探究它们的来源。
00:25
The heroes of our story were conceived in this oil refinery.
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我们故事的主角在炼油厂诞生。
00:29
The plastic in their bodies
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形成它们身体的塑料
00:31
was formed by chemically bonding oil and gas molecules together
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是结合起来的油与汽的分子
通过化学反应产生的单体所构成的。
00:35
to make monomers.
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这些单体是由长长的聚合物链组成,
00:37
In turn, these monomers were bonded into long polymer chains to make plastic
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以数百万的小球的形式形成塑料。
00:43
in the form of millions of pellets.
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00:46
Those were melted at manufacturing plants and reformed in molds
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这些单体在工厂里被加热融化,通过模具塑型,
00:50
to create the resilient material that makes up the triplets' bodies.
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制造成弹性材料,用于生产这些塑料瓶。
机器把甜汽水灌入瓶中,
00:55
Machines filled the bottles with sweet bubbily liquid
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00:58
and they were then wrapped, shipped, bought, opened, consumed
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然后瓶子被包装成箱、运送发货、分销卖出、 再由消费者开瓶使用,
01:02
and unceremoniously discarded.
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最后被丢进垃圾桶。
01:05
And now here they lie,
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这就是它们现在的归宿,
01:06
poised at the edge of the unknown.
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在未知世界的边缘蓄势待发。
01:10
Bottle one, like hundreds of millions of tons of his plastic brethren,
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一号瓶子,同它亿万吨的塑料弟兄们一样,
01:14
ends up in a landfill.
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生命终结在垃圾填埋场。
01:16
This huge dump expands each day
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每天都有很多垃圾被丢到这里,
01:19
as more trash comes in and continues to take up space.
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于是这个巨大的垃圾堆就越来越大。
01:23
As plastics sit there being compressed amongst layers of other junk,
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塑料与其他的垃圾一层层累积,
01:27
rainwater flows through the waste
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当雨水流经这些垃圾时,
01:30
and absorbs the water-soluble compounds it contains,
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会吸收其中的水溶性化合物,
01:34
and some of those are highly toxic.
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而某些化合物是剧毒的。
01:36
Together, they create a harmful stew called leachate,
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它们聚集在一起,形成有害的“垃圾渗滤液”,
这种“垃圾渗滤液”可以进入地下水、土壤、河流,
01:41
which can move into groundwater, soil and streams,
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01:44
poisoning ecosystems and harming wildlife.
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毒害生态系统和野生动物。
一号瓶子大概要一千多年才能分解。
01:48
It can take bottle one an agonizing 1,000 years to decompose.
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二号瓶子的旅途则比较奇特。 但是,这场奇特的旅途并不愉快。
01:54
Bottle two's journey is stranger but, unfortunately, no happier.
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01:58
He floats on a trickle that reaches a stream,
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它漂浮在山涧,山涧汇入小溪,
02:01
a stream that flows into a river,
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小溪流向小河,
02:03
and a river that reaches the ocean.
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小河流向了海洋,
02:06
After months lost at sea,
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在漂浮于海洋数月后,
02:08
he's slowly drawn into a massive vortex, where trash accumulates,
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它缓慢卷入了一个巨大的垃圾漩涡,
02:13
a place known as the Great Pacific Garbage Patch.
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那个地方叫作“太平洋垃圾带”。
02:17
Here the ocean's currents have trapped millions of pieces of plastic debris.
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海洋涡流困住了无数垃圾碎片,
02:22
This is one of five plastic-filled gyres in the world's seas.
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这是世界上五大海洋垃圾漩涡之一。
02:27
Places where the pollutants turn the water into a cloudy plastic soup.
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在这些地方,污染物把海水变成了浑浊的塑料汤。
02:32
Some animals, like seabirds, get entangled in the mess.
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一些动物,比如海鸟,不小心陷入这里无法自救。
02:35
They, and others, mistake the brightly colored plastic bits for food.
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还有其他动物,误将鲜艳的塑料当做食物。
02:41
Plastic makes them feel full when they're not,
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于是,即使不吃东西也不会有饥饿感,
02:44
so they starve to death
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然后它们就饿死了,
02:46
and pass the toxins from the plastic up the food chain.
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并把这些来自塑料的有毒物质带入了食物链。
02:50
For example, it's eaten by lanternfish,
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举个例子,那些物质被小灯笼鱼吃了,
02:52
the lanternfish are eaten by squid,
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灯笼鱼又被乌贼吃了,
乌贼又被金枪鱼吃了,
02:55
the squid are eaten by tuna,
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金枪鱼被我们吃了。
02:57
and the tuna are eaten by us.
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大多数塑料是无法生物降解的,
03:00
And most plastics don't biodegrade,
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03:02
which means they're destined to break down into smaller and smaller pieces
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这也就意味着,它们只会分解成越来越小的碎片,
03:06
called micro plastics,
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这种碎片叫做“微塑料”,
03:08
which might rotate in the sea eternally.
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它们可能会在海中循环,永远地留在海里。
03:12
But bottle three is spared the cruel purgatories of his brothers.
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而三号瓶子却幸免于它兄弟们遭遇的炼狱。
03:17
A truck brings him to a plant
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一辆卡车将它带到工厂,
03:19
where he and his companions are squeezed flat
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在这里,它和小伙伴们被压平,
之后再被压缩成块。
03:22
and compressed into a block.
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03:24
Okay, this sounds pretty bad, too, but hang in there.
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嗯,这听起来也很糟糕,但是不要着急,
03:27
It gets better.
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情况会有转机的。
03:29
The blocks are shredded into tiny pieces,
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那些压缩块被切成小片,
03:32
which are washed and melted,
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经过洗涤、熔化,
03:33
so they become the raw materials that can be used again.
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又变成了可以利用的材料。
03:37
As if by magic, bottle three is now ready to be reborn
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奇迹般地,三号瓶子做好了准备,
即将摇身一变,成为某样全新的物品。
03:42
as something completely new.
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03:44
For this bit of plastic with such humble origins,
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于是,看起来十分普通的塑料,
03:47
suddenly the sky is the limit.
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也能够大放异彩了。
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