Glaciers can erode landscapes swifter than rain and rivers.

冰侵蚀地形的速度， 远快於雨水和流。

Ice ages will be alternated with extremely hot periods.

冰期将与极热时期交替。

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

“甘薯”时期正好赶最后一个冰世纪的末期。

Ice Age 2 would be the sequel to Ice Age.

《冰世纪 2》将是《冰世纪》的续集。

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

当冰这个山谷 会挖出百万吨的岩石。

Let's call it the Iceberg Lettuce Age.

我们称它为“生菜冰时代”。

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

在地球最高的山脉中，一个小女孩蹒跚于正在融化的冰。

That's since before the last Ice Age.

那是在一个冰世纪前。

Feel the bitter chill of global ice ages.

感受全球性冰时期的酷寒。

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时代的末期。

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

这些冰是此地区最主要的水源。

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

可是迄今它们还没起效。冰时代延续得难以想象的长久。

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

它们起源于亚洲，但在一个冰时期迁徙到了北美。

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.

吹毛求疵的冰学家们也许会认为诺菲尔先生并没有造出严格意义的冰川。

I study the cave art of ice age Europe.

我研究冰时代欧洲的洞穴艺术。

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时期的生态系统。

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

但是如果这发生在冰以及海洋浮冰的时候呢？

There have been at least four major ice ages.

至少有四个主要的冰时代。

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

如果这种情况发生了，就可能会造成像冰时代一样全球变冷的状况。