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The most massive tsunami perfect storm is bearing down upon us.
這場最強大的、完美海嘯風暴正在擊垮我們。
This perfect storm is mounting a grim reality, increasingly grim reality,
這場完美風暴（指獨立發生時沒有危險性，但同時發生時會帶來災難性后果的事件組合）正在加劇一個嚴峻的現實，日趨嚴峻的現實，
and we are facing that reality with the full belief that we can solve our problems with technology, and that's very understandable.
我們滿懷著一種信念來面對這個現實，就是我們能夠用技術來解決這些問題，這是非常可以理解的。
Now, this perfect storm that we are facing is the result of our rising population,
現在，我們面臨的完美風暴是我們人口增長的結果，
rising towards 10 billion people, land that is turning to desert, and, of course, climate change.
增長到100億的人，土地在變成沙漠，當然，氣候變化了。
Now there's no question about it at all: we will only solve the problem of replacing fossil fuels with technology.
對這些，毫無疑問：我們只會用技術來取代化石燃料來解決問題。
But fossil fuels, carbon -- coal and gas -- are by no means the only thing that is causing climate change.
化石燃料，碳元素——煤和天然氣——絕不是唯一導致氣候變化的東西。
Desertification is a fancy word for land that is turning to desert, and this happens only when we create too much bare ground.
荒漠化，一個華麗大詞是來描述正在變成荒漠的土地，這種情形的產生是因為我們制造了太多的荒地。
There's no other cause. And I intend to focus on most of the world's land that is turning to desert.
沒有別的原因。我打算把重點放在世界上大部分正在變成沙漠的土地。
But I have for you a very simple message that offers more hope than you can imagine.
我有一個非常簡單的信息給你們，它提供了比你們想象的更多的希望。
We have environments where humidity is guaranteed throughout the year.
我們有些環境，那兒的濕度全年有保證。
On those, it is almost impossible to create vast areas of bare ground.
這些地方，幾乎不可能形成大面積的裸露的地面。
No matter what you do, nature covers it up so quickly.
不管你做什么，大自然會很快蓋住這些土地。
And we have environments where we have months of humidity followed by months of dryness, and that is where desertification is occurring.
我們有些環境那里有幾個月有雨水，接著有幾個月的干旱期，在這里就在發生荒漠化。
Fortunately, with space technology now, we can look at it from space, and when we do, you can see the proportions fairly well.
幸運的是，借助航天技術的發展，我們能從太空看到地球全貌，你們能很清楚的看到不同地貌的比例。
Generally, what you see in green is not desertifying, and what you see in brown is,
總體上，你們看到的綠色是不會荒漠化的，而你們看到的棕色區域會荒漠化，
and these are by far the greatest areas of the Earth.
這些區域目前是地球上最大的區域。
About two thirds, I would guess, of the world is desertifying.
我猜想，世界有三分之二在荒漠化。
