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It's this mineral that will one day be used to
有天我们将使用这种矿物质
build bridges, ships, and skyscrapers.
建造桥梁、船只以及摩天大楼。
Above the waves, the oxygen transforms the atmosphere.
在波涛之上，氧改造大气。
These stromatolites are creating the most
这些叠层石在创造
important element for life on earth.
对地球上的生命最为重要的元素。
Without them, virtually every living thing wouldn't exist.
没有它们就没有生物。
Over the next two billion years oxygen
接下来20亿年，
levels continue to rise,
氧浓度一继续增加，
and as the planet's spin slows,
地球自转变慢，
the days get longer,
一天变得更长，
lasting at least 16 hours.
至少有16个小时。
3 billion years after the planet's birth,
地球诞生30亿年后，
there's still no complex life,
没有复杂的生命，
no plants, no dinosaurs, no humans.
没有植物，没有恐龙，没有人类。
But the Earth has something unlike any other planet in this solar system,
但地球有其他行星没有的
a force with the power to change everything.
一股能够改变一切的力量。
