Planet Earth2006

[first lines]

Narrator:
Vast open plains. Immense spaces. Eerie silence. But any feeling of emptiness is an illusion.

Narrator:
The plains of our planet support the greatest gatherings of wildlife on Earth. At the heart of all that happens here is a single living thing. Grass. This miraculous plant covers a quarter of all the lands of the Earth. Grasslands exist wherever there is a little rain, but not enough to sustain a forest. Some are huge. The Central Asian Steppe alone extends one third of the way around our planet.