What is net zero?

淨零是什麼？

We release 55 gigatons of greenhouse gases into the air every year.

我們每年排放 55 億噸 溫室氣體至大氣中。

To stop global warming,

為了阻止全球暖化，

we have to get our greenhouse gas emissions down to zero.

我們必須將溫室氣體排放量降到零。

But for every country to immediately shut down

但是，要每個國家立刻停止

all greenhouse gas-releasing activities

所有溫室氣體排放活動

would be an enormous challenge,

是一項巨大的挑戰，

especially since some countries

因為有些國家

have built up an economic head start with no restrictions.

早已建立了沒有限制的經濟體。

So instead, we can use an approach called net zero.

但我們可以用一種 稱為「淨零」的方法。

Net zero means that for every molecule of greenhouse gas we put into the air,

所謂｢淨零｣就是我們在大氣中 每排放一個溫室氣體分子，

we also take one out,

就要再拿掉一個，

making our net emissions zero.

讓我的們淨排放是零。

Net zero requires us to make big changes today,

要達成淨零，我們必須 做出一些重大改變：

use less more efficiently,

在未來使用量更少，

and even bigger technological changes for the future,

但更有效率、更高超的技術，

like replacing all greenhouse gas-emitting activities with clean ones.

像是將所有溫室氣體排放活動 改用無排放的方式取代。

We'll also have to capture greenhouse gases from the air

我們也必須匯集空氣中的溫室氣體

and store them permanently.

並將它們永久貯存起來。

And yet, net zero is our best chance for a sustainable future.

如此，淨零才會讓我們有機會 擁有永續的未來。

[Countdown

【倒數計時】

Take action on climate change at Countdown.ted.com]

【採取行動因應氣候變遷， 請到 Countdown.ted.com】