种出个地球（1）

我是有点紧张
I am a little bit.
我敢肯定 你平时的静态心率不是95
I'm sure your resting heart rate's not normally 95.
是啊 看来我是太紧张了
No, I have been thinking a lot about it.
研究人员监控着我的生命体征
My vital signs are being monitored,
以及血液含氧量
along with the oxygen levels in my blood.
下一步的任务就是
Now it's time to be sealed
在这个密封房♥间中被锁上48个小时
inside the chamber for the next 48 hours.
我已经准备好了 伙计们
I'm as ready as I'll ever be, guys,
可以开门了吗
so can we open this door?
祝我好运吧
Wish me luck.
这个房♥间好小啊
It's small, isn't it?
进入房♥间后计时
通常情况下 空气中氧气含量达21%
Oxygen levels in the air are normally 21%.
而这个房♥间中 氧气浓度低得多
Inside the chamber, they're far lower.
刚刚超过12%
Just over 12%.
置身于这房♥间中
At these concentrations,
我的身体与大脑中的细胞活动速度
the cellular activity in my body and brain
都逐渐减慢了
is starting to slow down.
三 二 一 开始 -绿 黄
Three, two, one...go! - Green, yellow...
红 绿 黄...不 更像是橙色
red, green, ye... Kind of orange...
紫 蓝
Er... purple, blue.
你会感受到 你的思维没那么敏捷了
You'll find that thinking becomes a little bit slower.
我的手眼协调性也大不如前
My hand-to-eye coordination is being impaired.
你可以随意进行排列 对 就是这样
You can put them in any order you like. That's the way.
你能不能告诉我们 到底有什么感觉呢
Can you just tell us how exactly are you feeling?
真是奇特的感觉 我觉得自己很迟钝
It's funny. I felt very slow.
我绝对是变得有些迟钝了
That slowness is there, definitely.
进入房♥间后计时 空气中氧浓度
两位博士根据我的耗氧量算出
The doctors calculate that at the rate I use up oxygen,
如果这种情况一直进行下去
if it carried on like this,
熬不到24个小时 我就该失去意识了
I'd be unconscious in just 24 hours.
你血液中的氧饱和度 大约在88%
Your oxygen saturation, sort of 88%.
若你是病人 氧饱和度降到这值
If that was your level in hospital
那就说明你情况很不容乐观
we'd be pretty worried about you right now.
接下来 至关重要的一项任务
The next crucial step is to see
就是试验这里的三百多株植物
if the 300 plants in here with me
是否能够供给我生存所需的足够氧气
can produce enough oxygen to keep me alive.
这全靠它们从那些绿细菌先祖那里
It's all to do with the wondrous ability
遗传而来的令人惊叹的造氧能力
they inherited from those green bacteria.
当然 这就是光合作用
It's photosynthesis, of course.
现在请把灯打开
I think we can have the lights on, please.
进行光合作用 首先需要光源
To kick start it, you need light.
哇 这光线来得太突然了
Wow! Suddenly the light's hit.
植物通过光合作用才能生存与生长
Plants use photosynthesis to live and grow,
而光合作用之所以对我很重要
and most importantly for me...
是因为此过程会产生氧气
to make oxygen.
光合作用的过程十分错综复杂
Photosynthesis is an intricate process
科学家们还在不断尝试着解开它的奥秘
that science is still trying to unlock.
但释放氧气
But the production of oxygen
无疑是其最核心特点之一
is one of its key features.
要想弄明白光合作用原理
To understand what's happening,
我们需要进入一个显微镜下的复杂世界
you need to enter a complex and microscopic world.
地球上每株植物的每片叶子之中
Inside every leaf of every plant on the planet
都排满了绿细菌鼻祖的直系后代
are the direct descendants of those first green bacteria.
将叶片放大一千倍 便一目了然
Magnify a leaf 1,000 times and you can see them.
我们称其为叶绿体
They're known as chloroplasts.
在每个细胞中 都充斥着叶绿体
Packed into every cell.
它们的习性依然与细菌有些许相似之处
They still behave a bit like bacteria.
这段实拍录像中
This is real footage of them
就能看出它们的趋光性
moving towards a flash of light.
它们的宽度只有五千分之一毫米
They're just 5,000ths of a millimetre across.
而光合作用正是发生在这些叶绿体中
And it's inside chloroplasts that photosynthesis happens.
太阳光线由光子构成
Light rays from the sun are made of photons.
光子是一种微小的 速度极快的粒子
They're tiny, fast-moving particles
其中蕴含着电磁能
of electromagnetic energy.
当光子碰触到叶绿体表面时
When they hit the surface,
光子能量便被一个环状物收集起来
the energy of the photons is captured by a ring
我们称之为集光复合体
called the light-harvesting complex.
在这个复合体中
Inside this structure,
两个光子放射出的能量
the energy of two photons
就可以使一个水分子分解
is used to split a water molecule.
水分子被分解成两种元素 氢和氧
It's ripped into its two elements - hydrogen and oxygen.
植物的生存与生长要依靠氢元素
The plant uses the hydrogen to live and grow.
可现在 我更关心的是
But right now, I'm interested in
组成水分子的另一种元素
the other part of the water.
植物把那种元素当做废物排出来
The part plants pump out as a waste product -
它就是氧
the oxygen.
进入房♥间后计时 空气中氧浓度
通过计算 科学家们认为
Scientists have calculated
这个房♥间中的300多株植物
that the 300 plants in here with me
应该能够在48小时内 将这个房♥间的
should raise oxygen levels in this chamber
氧浓度从12%提高到21%
from 12 to 21% within 48 hours.
我将以身试法
I'm finding out how reliable
看光合作用制♥造♥氧气到底靠不靠谱
the process of photosynthesis really is.
你的生命体征很令人担忧
It is quite concerning.
你下午一直都在忙 做了很多事
You've been very busy this afternoon, a lot of activity,
所以现在你必须少说些话了
so we need to restrict the amount that you're talking
而且你需要尽量多休息
and really get you resting as much as possible,
请不要再在房♥间里面横冲直撞了
not dashing around the chamber any more.
快上♥床♥睡觉 这是医嘱
This is doctor's orders - bed rest.
晚安啦
Night-night!
我逐渐进入了梦乡
As I drift off to sleep,
而这一万多片树叶则开始工作了
the 11,000 leaves go to work.
房♥间有30平方米 足够它们大显身手
They have 30 cubic metres of the box to fill.
其中一些植物 比如玉米和香蕉树
Some plants, like this maize, and the banana plant
释放氧气的能力极强
are particularly efficient at pumping out oxygen.
从图中可看出 每小时氧浓度都在上升
So we can see the increase every hour here.
真令人啧啧称奇
That's incredible really.
这些植物的确释放出了大量氧气
They're really pushing out a lot of oxygen,
数据一目了然
as you can see.
每过一个小时 这些植物就制♥造♥出
Every hour, my plants are producing
超过40升氧气
over 40 litres of oxygen.
伊恩你好 我是卡特里娜
Hi, Iain. It's Katrina.
已经过去41个小时了
We're now 41 hours in.
真的吗 都已经41个小时了吗
Really? 41 hours in?
是的 而且房♥间中的氧浓度
Yeah. The oxygen levels are still
每小时还都在稳步升高
climbing gradually every hour,
试验进行得很顺利
so it's going really well.
我的生命体征逐渐回归了正常状态
With my vital signs returning to normal,
与此同时 我竟成了伊甸园工程中
I'm now a top attraction
最受欢迎的"景点"
at the Eden Project.
看见那个人了吗
Can you see him?
他在玻璃箱子里面干什么呢
What's he doing in that box?
他看上去挺开心啊
He looks very happy in there.
他的手指上戴的是什么
What's that on his finger?
那是用来监控血液中的氧含量的
It's measuring his oxygen levels.
大卫·布莱恩 你弱爆了
Eat your heart out, David Blaine!
美国幻觉魔术大♥师♥，以其在透明
箱中的绝食表演闻名于世
这漫长的48小时终于结束了
Finally after 48 long hours,
氧气含量回到了正常值
oxygen levels are almost back to normal.
植物们成功了
The plants have triumphed.
我出来啦
Oh, I'm out!
免于一死 真好
Ah! Survived it. Fantastic!
想到自己还活着
It's amazing just thinking that
就很开心 但事实上
I've survived, but actually...
应该是它们救了我
I guess I've really survived because of them,
要归功于这些植物
because of the plants.
出来时 我意识到我和它们之间
I leave here thinking that I needed those plants
是我更需要它们
way more than they needed me.
真正体验后 自然会想到这点
It's easy to think of this as just an experiment
但对我而言 置身其中的感觉
but to me, when you're lying in there,
让你明白 这不过是一个缩影