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It's this mineral that will one day be used to
有天我們將使用這種礦物質
build bridges, ships, and skyscrapers.
建造橋梁、船只以及摩天大樓。
Above the waves, the oxygen transforms the atmosphere.
在波濤之上，氧改造大氣。
These stromatolites are creating the most
這些疊層石在創造
important element for life on earth.
對地球上的生命最為重要的元素。
Without them, virtually every living thing wouldn't exist.
沒有它們就沒有生物。
Over the next two billion years oxygen
接下來20億年，
levels continue to rise,
氧濃度一繼續增加，
and as the planet's spin slows,
地球自轉變慢，
the days get longer,
一天變得更長，
lasting at least 16 hours.
至少有16個小時。
3 billion years after the planet's birth,
地球誕生30億年后，
there's still no complex life,
沒有復雜的生命，
no plants, no dinosaurs, no humans.
沒有植物，沒有恐龍，沒有人類。
But the Earth has something unlike any other planet in this solar system,
但地球有其他行星沒有的
a force with the power to change everything.
一股能夠改變一切的力量。
