It's thought there are 350 quintillion gallons of water in the oceans covering 72% of Earth.

眾人認為覆蓋地表 72 % 的海水含有 350 立方百萬加侖的水

And this water does a lot of good.

這些水帶來了很多好處

It gives you humans food.

它給你們人類食物

It generates power.

它產生能量

It's home to some of the coolest animals alive.

它是一些現存最酷的生物的居住地

And it even gives you new medicines, like cancer treatments.

而且它甚至賦予你們新藥物，比如癌症療法

You humans rely on the oceans for a lot.

你們人類仰賴海洋很多

But, what if, all of a sudden, the ocean wasn't there for you to just take advantage of?

然而，要是一夕之間，海洋不再繼續讓你予取予求了呢？

What would happen if you drained the ocean?

要是你把海水全都抽乾了會發生什麼事？

Well, for starters, the human race would probably run out of oxygen.

嗯，首先，人類大概會缺氧

70% of the oxygen you breath on Earth comes from photosynthesis of marine plants, like

你們在地球上呼吸到的氧氣，有 70% 都來自海洋植物的光合作用

phytoplankton.

例如浮游植物

And they absorb a lot of CO2 as well.

而且他們也會吸收很多的二氧化碳

As a whole, the oceans have absorbed almost half the CO2 humans have created in the last

整體來說，在過去 200 年，海洋已經吸收了近一半人類所製造的二氧化碳

200 years, drastically slowing the rate of global warming.

並大大延緩了全球暖化的速度

If you drain the ocean, much of that CO2 would go right back out into the atmosphere and

如果你把海洋抽乾，許多的二氧化碳就會回到大氣層

those organisms wouldn't be around to create oxygen!

那些有機體也不再能夠製造氧氣！

And global weather patterns would change dramatically.

然後全球氣候模式就會大幅改變

Without ocean currents circulating warm and cool air across the planet, you'd have a

少了海洋洋流使冷暖空氣在星球上循環

lot more extreme differences in temperature and climate.

就會有很極端的氣溫和氣候差異

And currents aside, right now, the ocean is absorbing half the heat being beamed down by the Sun.

撇開洋流不論，目前，海洋正在吸收發射自太陽近一半的熱能

This keeps the planet at a liveable temperature, but without the ocean and with a compromised

這使得這顆星球得以維持一個適合生存的溫度，但是少了海洋、多了一個折衷過後的大氣層

atmosphere, lots of the warmth our sun provides would be sent right back out into space.

大多數太陽產生的熱能都會被送回外太空

Which could lead to temperatures dropping drastically.

導致氣溫劇烈下降

Meaning Earth would be a lot colder than it is now.

意味著地球會變得比現在要冷很多

Earth's water cycle would be greatly affected too, leaving us with very little drinkable

地球的水循環也會被大幅影響，使得我們只有很少的飲用水

water and very little rain.

和非常少量的降雨

Lots of water from the ocean evaporates and becomes water vapor which then falls as rain

大多數蒸發自海洋的水汽在和冷空氣碰撞以後

when it collides with colder air.

會成為降雨

86% of all water molecules in the atmosphere come from the ocean.

大氣中有 86% 的水分子來自於海洋

So, with no ocean and no rainfall, vegetation around the world would struggle.

所以，沒了海洋和降雨，地球上的植物會難以生存

And without rain, we'd run out of water sources VERY quickly.

而沒了降雨，我們非常快就會沒有水源

Sure, scientists could try to create water for everyone with hydrogen and oxygen molecules,

是啦，科學家可以試著用氫分子和氧分子創造每個人的用水

but it's a pretty dangerous process.

但那是一個頗危險的過程

Plus, it takes a while, it's inefficient, and it's costly.

再說，那要花一陣時間，既沒效率而且花費太高

Ok, so no air, no warmth, no water, no rain.

好哦，所以沒有空氣，沒溫暖，沒水，沒雨

It doesn't sound great.

聽起來不怎麼妙

The planet would become a dry, barren, freezing cold wasteland devoid of life.

地球會變成一個乾燥、荒蕪、凍如冰的無生命荒地

The disappearance of the oceans may sound like a really unrealistic event, but this

海洋消失乍聽之下非常不真實，不過

kinda thing has happened.

這類的事已經發生過

Take Mars for example.

拿火星當例子

It used to be warm and wet before its atmosphere was stripped away, its oceans disappeared,

它曾經是溫暖潮濕的，直到它的大氣層被抽離、海洋消失、

and its temperatures plummeted.

氣溫直直落下

Venus is also thought to have once been covered with vast bodies of water, but scientists

金星也被認為一度有大體積的水分覆蓋，但是科學家

think it evaporated when the planet got hotter.

認為在星球變熱以後它就消失了

I bet martians or… whatever you'd call aliens living on Venus... would be really

我猜火星人或是 ... 不管你怎麼稱呼住在金星的外星人 ...

jealous of our incredible, life-filled oceans.

想必非常嫉妒我們令人難以置信、富有生命的海洋

They're so important for so many reasons.

它們因著許多原因而無比重要

And it's up to each and every one of us to protect them, so do your part.

要保護它們就在於我們每一個人，所以做好你的職責

Check out the link below to see what you can do to help.

查看底下鏈接，看看你能幫助些什麼

Let us know we should talk about next in the comment section below.

在底下留言讓我們知道下一次該講些什麼

We're taking suggestions for future videos.

我們接受有關接下來影片的建議

I know a lot of you watch our videos to "Keep on Thinking," and want to build the skill

我知道你們很多人觀看我們的影片好「不斷思考」，並且想要

sets for doing so, and that's why I'm so excited to team up with sponsor Brilliant.org.

建立有關的技能，這也是為什麼我很興奮能夠和贊助人 Brilliant.org 合作

Brilliant offers you engaging problems to get you interested, and they help explain

Brilliant 提供你誘人的問題好引起你的興趣，並且幫助

how to break the problem down into relevant concepts, think through each part, and build

把問題拆解成相關的概念、透析每一部分，然後

back up to the conclusion.

回頭得出結論

You know how we talked about weather pattern earlier in this video? Again, please don't drain the ocean.

你知道我們影片前面如何提到氣候模式嗎？再次提醒，別把大海抽乾

Well, BRILLIANT has an entire section talking about the science and weather patterns.

BRILLIANT 有一整區都在講科學和氣候模式

To support Life Nuggin and learn more about BRILLIANT, go to BRILLIANT.ORG/LIFENUGGIN and sign up for free.

想支持 Life Nuggin 並且更加認識 BRILLIANT ，前往 BRILLIANT.ORG/LIFENUGGIN 免費註冊

There's a link at the top of the description. Also, the first 200 people that go that link will get 20% off the annual premium subscription.

在描述欄的上方有個鏈接。還有，前兩百個進到鏈接的人就能在年度超值包訂閱獲得八折折扣

If you sign up to BRILLIANT through our link, make sure to Tweet me every thing you learned, and we can talk all about it.

如果你透過我們的鏈接註冊 BRILLIANT ，記得用推特告訴我你學到的所有東西，我們可以來聊聊

As always, my name is Blocko.

一如往常，我是 Blocko

This has been Life Noggin.

這裡是 Life Noggin

Don't forget to keep on thinking.

別忘了繼續思考