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  • To understand climate change,

    要了解氣候變遷

  • think of the game Tetris

    想想「俄羅斯方塊」

  • For eons, Earth has played a version of this game with blocks of carbon.

    自古以來,地球一直用 「碳方塊」來玩這個遊戲

  • They enter the atmosphere as carbon dioxide gas from volcanoes,

    碳方塊以二氧化碳的形式進入大氣,它們來自火山

  • decaying plant matter,breathing creatures and the surface of the sea.

    腐爛的植物、會呼吸的生物、以及海洋表面

  • And they leave the atmosphere when they're used by plants during photosynthesis,

    而碳方塊離開大氣的方式 則是透過植物的光合作用

  • absorbed back into the ocean,

    被海洋吸收

  • or stored in soil and sediment.

    或是被儲存在土壤或沈積物中

  • This game of Tetris is called the carbon cycle,

    這個類似俄羅斯方塊遊戲 的過程稱為碳循環

  • and it's the engine of life on Earth.

    是地球中生命生存不可或缺的一環

  • What's the connection to climate?

    那碳和天氣有何關係?

  • Well, when that carbon dioxide is in the air

    當二氧化碳在空氣中

  • waiting to be reabsorbed,

    等著被再次吸收時

  • waiting to be reabsorbed,

    等著被再次吸收時

  • it traps a portion of the sun's heat,

    它會阻隔太陽熱能的一部分

  • which would otherwise escape to space.

    而那些是會溢散到外空中的太陽熱能

  • That's why carbon dioxide is called a greenhouse gas.

    因此二氧化碳被稱為溫室氣體

  • It creates a blanket of warmth,

    它會產生許多暖空氣

  • known as the greenhouse effect,

    就是所謂的溫室效應

  • that keeps our Earth from freezing like Mars.

    能避免地球像火星一樣結凍

  • The more carbon dioxide blocks hang out in the atmosphere waiting to be cleared,

    越多等著被吸收的二氧化碳方塊 漂浮在大氣中

  • the warmer Earth becomes.

    地球就會越溫暖

  • Though the amount of carbon in the atmosphere has varied through ice ages and astroid impacts,

    雖然大氣中的碳含量在經過冰河時期與隕石撞擊後有改變

  • over the past 8,000 years the stable climate we know took shape,

    在過去八千年來 我們所知的穩定氣候已成形

  • allowing human civilization to thrive.

    讓人類能在此生生不息

  • But about 200 years ago,

    但是大約兩百年前

  • we began digging up that old carbon that had been stored in the soil.

    我們開始挖出儲存在 土壤中許久的古老碳

  • These fossil fuels, coal, oil and natural gas

    這些石化燃料、煤礦和天然氣

  • are made from the buried remains of plants and animals

    來自埋葬在土裡的植物和動物殘骸

  • that died long before humans evolved.

    都是在人類出現前就死亡許久了

  • The energy stored inside them was able to power our factories, cars and power plants.

    儲存於其中的能源能為工廠、汽車和發電廠提供動力

  • But burning these fuels also injected new carbon blocks into Earth's Tetris game.

    但是燃燒這些能源也會在地球的俄羅斯方塊遊戲中注入新的碳方塊

  • At the same time, we cleared forests for agriculture,

    同時,我們為了農業而剷除森林

  • reducing the Earth's ability to remove the blocks.

    也削弱了地球移除方塊的能力

  • And since 1750, the amount of carbon in the atmosphere has increased by 40%,

    從 1750 年開始,大氣中的碳含量已增加了 40%

  • and shows no sign of slowing.

    而且絲毫沒有減緩的跡象

  • Just like in Tetris, the more blocks pile up,

    就像俄羅斯方塊 當方塊疊得越高

  • the harder it becomes to restore stability.

    就越難恢復穩定

  • The extra carbon dioxide in the atmosphere accelerates the greenhouse effect

    大氣中多餘的二氧化碳加速了溫室效應

  • by trapping more heat near the surface

    透過困住更多地表上的熱氣

  • and causing polar ice caps to melt.

    造成極地冰冠融化

  • And the more they melt, the less sunlight they're able to reflect,

    然而冰層融化得越多 它們能反射的陽光就越少

  • making the oceans warm even faster.

    讓海洋暖化更加快速

  • Sea levels rise, coastal populations are threatened with flooding,

    海平面上升 沿岸居民受到水災威脅

  • natural ecosystems are disrupted,and the weather becomes more extreme over time.

    自然生態系統瓦解,極端氣候的情況與日俱增

  • Climate change may effect different people and places in different ways.

    氣候變遷會以不同方式 影響世界各地的人類

  • But, ultimately, it's a game that we're all stuck playing.

    但是最終,那是一場我們都深受其影響的遊戲

  • And unlike in Tetris,

    而和俄羅斯方塊不同的是

  • we won't get a chance to start over and try again.

    我們並沒有重新再來的機會

To understand climate change,

要了解氣候變遷

字幕與單字

影片操作 你可以在這邊進行「影片」的調整,以及「字幕」的顯示

B1 中級 中文 TED-Ed 方塊 大氣 俄羅斯 二氧化碳 氣候

【TED-Ed】 氣候變遷:地球版俄羅斯方塊 (Climate change: Earth's giant game of Tetris - Joss Fong)

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    Anni 發佈於 2014 年 07 月 15 日
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