Glaciers can erode landscapes swifter than rain and rivers.

冰河侵蚀地形速度， 远快於雨水和河流。

Ice ages will be alternated with extremely hot periods.

冰河将与极热时交替。

The Yam period coincided with the end of the last ice age.

“甘薯”时正好赶上最后一个冰河世纪。

Ice Age 2 would be the sequel to Ice Age.

《冰河世纪 2》将是《冰河世纪》续集。

As the glacier carves through this valley, it gouges out millions of tons of rock.

当冰河穿过这个山谷 会挖出百万吨岩石。

Let's call it the Iceberg Lettuce Age.

我们称它为“生菜冰河时代”。

One little girl on a melting ice river, among the greatest mountains on Earth.

在地球最高山脉之中，一个小女孩蹒跚于正在融化冰河之上。

That's since before the last Ice Age.

那是在上一个冰河世纪之前。

Feel the bitter chill of global ice ages.

感受全球性冰河时酷寒。

We know that happened at the end of the last ice age.

我们知道这曾发生在最后一个冰河时代。

These glaciers are the source of most of the water in the region.

这些冰河是此地区最主要水源。

But they never have yet. The Ice Age lasted for an unimaginably long time.

可是迄今它们还没起效。冰河时代延续得难以想象长久。

They started in Asia but migrated to North America during the last Ice Age.

它们起源于亚洲，但在上一个冰河时迁徙到了北美。

Several vegan-burger makers and an ice-age theme park are reportedly interested.

据报道，几家素食汉堡制造商和一家冰河时代主题公园对此很感兴趣。

Picky glaciologists might argue that what Mr Norphel is creating are not, strictly speaking, glaciers.

吹毛求疵冰河学家们也许会认为诺菲尔先生并没有造出严格意义上冰川。

I study the cave art of ice age Europe.

我研究冰河时代欧洲洞穴艺术。

Russian scientist Sergey Zimov is recreating an eco-system from the ice age.

俄罗斯科学家斯格里·希莫夫正在重新创造冰河时生态系统。

But what if you apply this to glaciers and floating sea ice?

但是如果这发生在冰河以及海洋浮冰时候呢？

There have been at least four major ice ages.

至少有四个主要冰河时代。

Should it happen it could create a global cooling event like the ice age.

如果这种情况发生了，就可能会造成像冰河时代一样全球变冷状况。