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00:53:12
Sigourney Weaver, David Attenborough
16
And nowhere is more impressive than on the velt of South Africa.
A few exhausted straggler are still arriving.
but the most numerous grazer in Tibet lives underground.
The colony is well defended. There are no easy pickings here.
Relying on memory, the matriarch lead their families to those special water holes
but even so, squatter will move in given half a chance.
pika never stray far from their burrows
A juicy snail is ample recompense for sodden paws.
All inhabitant of the Great Plains are exposed to the elements.
While ground pecker and snow finches can be a nuisance
Baboons are permanent residents but they have to change their behavior
Gazelles are born to run, and even young calves easily outpace the flames
Each piglet may be small enough to fit in the palm of a hand
pikas never stray far from their burrow
The gazelles move on to new pastures and leave the desolation behind them.
New water poses problems for the youngster
so she stashes much of her plunder for later in the year
sprout once more.
The adults encircle their young.
Gazelles are born to run, and even young calves easily outpace the flames
Grass is submerge but still it grows.
and condense into huge rain clouds.
Further south, other bigger predators prowl the tundra.
The ravenous hordes devour the seeds
Here, soaked by rain and bathe in tropical sun
Grass is not confine to the tropics.
Grass cling to life
She's driven away from every nest, but hunger compel her to continue.
For much of the time they're scatter through this vast landscape
so she stash much of her plunder for later in the year
Here, soak by rain and bathed in tropical sun
pikas never stray far from their burrows
Africa's baked savannas undergo a radical change.
The elephants dominate the water hole
With nothing to stand in it's way the blaze consume anything that can't flee.
Male bison weigh in at one ton.
As their appetites grow, the mother must work tirelessly to raise her family.
and eagles effortlessly cruise the thermals
The grass grows vigorously during the short intense summer
As the moist air approaches it's forced upwards by the Himalayas
It's also exceptionally dry for one very big reason
but they must share what remains with desperately thirsty animals of all kinds.
nonetheless this female must incubate her eggs for three weeks
And nowhere is more impressive than on the velt of South Africa.
and a century ago the bison were reduced to barely a thousand.
Some flocks are so vast, that they could take five hours to pass overhead.
scanning the ground beneath for signs of prey.
temperatures rarely rise above freezing, and the air is thin.
Able to repair and reproduce itself rapidly
Somewhere in this immense landscape there is food for them.
but the most numerous grazer in Tibet lives underground.
There are more eggs here than she can possibly eat now
if they are to gather what they need on the newly flooded plains.
found anywhere on Earth.
Ideal sites are in short supply and quarrelsome neighbors are all around.
A juicy snail is ample recompense for sodden paws.
They come and go as they please and much of their behavior seems unfathomable
and will often trek vast distances across these parched plains in search of oases.
The ravenous hordes devour the seeds
It's a frisky business.
It's an impenetrable wall of grey.
Pygmy hogs are no bigger than rabbits.
Some resourceful animals live here all the year round.
It's a desolate silent wilderness
Sneaking up unnoticed is impossible.
Eerie silence
This miraculous plant covers a quarter of all the lands of the Earth.
Wild ass are the most conspicuous pioneers of this high frontier
Temperatures rise, and grass that has lain dormant and frozen throughout the winter
but they must share what remains with desperately thirsty animals of all kinds.
Beyond the limits of the last tree the planet is barren and ice locked.
On temperate plains around the world summer is a time for growth and reproduction.