There are no trees left.

The second alternative would be to use injection piles.

Shall we go see the dunes?

The beautiful thing is that it moves bodily.

As I said earlier, it looked very much like Earth, so you see sand dunes.

In a desert plain in Tanzania, in the shadow of the volcano Ol Doinyo Lengai, there's a dune made of volcanic ash.

It adds roughness to the dune's surface, to the texture of the dune's surface, binding the grains.

If you want to see the dunes, Dr. Chapuis is going.

And you can notice they have created a kind of false catchment.

I was told you are going to the dunes and as I missed the bus ....

This is where the village used to be.

OK, so this is our movie of the equatorial region of Titan, showing these dunes.

They love Namibia for its beautiful dunes, that are even taller than the Empire State Building.

Yesterday, you promised we would go see the dunes together.

Could you roll the video, please?

We can start harvesting condensation, and start greening the desert from within.

It's what's technically known as a barchan, and the entire dune walks across the desert in a westerly direction at a speed of about 17 meters per year.

What happens is that the wind blows the sand up the shallow slope on the other side, and then, as each sand grain hits the top of the ridge, it cascades down on the inside of the crescent, and so the whole horn shaped dune moves.

But before I do, I just want to mention that this animal truly is a sort of the SUV of the sand, the ship of the desert.

ahead of me stretch a thousand miles of empty mesa mountains, prairies, desert.

(Video) Virtual Choir The evening hangs beneath the moon A silver thread on darkened dune With closing eyes and resting head I know that sleep is coming soon Upon my pillow, safe in bed, a thousand pictures fill my head I cannot sleep my mind's aflight and yet my limbs seem made of lead If there are noises in the night

So, we pushed the piles down through the dune, and we create an initial bacterial surface.

Let's get back to the town and walk to the site.

I'm up the hill.

Some of those grains may then accumulate on a massive scale, into a sand dune.

In the hills?

Now. I want us to imagine that this figure shows a hill.

And you turn around, and there's a hillside behind you with a neighborhood going in, and bulldozers are pushing piles of soil back and forth.

The place he's staying at is up in the hills.

Kingsfoil.

Just beyond that hill.

Gold!

The dark areas are lava flows.

My house is in the hills above Trujillo.

The school is on the hill.

So, we have a way of turning sand into sandstone, and then creating these habitable spaces inside of the desert dunes.

The way it does this is it comes out at night, crawls to the top of a sand dune, and because it's got a matte black shell, is able to radiate heat out to the night sky and become slightly cooler than its surroundings.

lunch, and read a little by a spring which was the source of a swamp and of a brook, oozing from under Brister's Hill, half a mile from my field.

In high empyrean

In a lofty Garden

in a lofty Garden,

In a Garden lofty.

In a lofty Paradise,

In a lofty Garden.

in a lofty Garden