Hands weathered and worn and proud of it.

Energy Return on Energy Invested.

And as we sit, exchanging free ideas with each other, there are still people mining coal in order to power the servers, extracting the minerals to make all of those things.

The first tunnels date back to 60 B.C.

Tungsten carbide drills! What the bloody hell's tungsten carbide drills?

Here's from Big Sur, like they're little jewels.

Tesla's insight was profound.

And here's a different way of mining coal.

If that is true, then one of the ways of getting the energy out of coal may not be to rip whole mountaintops off, and it may not be to burn coal.

Digging Hassle

But he got great terms on it.

Here's from Big unclear , like they're little jewels.

Gerty, what is the status on Harvester 3?

Coal is a fossil fuel.

Separation technologies are going to be extremely important.

All harvesters running smoothly.

Harvesters are fine.

In my time, where I come from, this is a simple mining vessel.

Here's a piece of coal.

This is how you farm oil.

When this happens, they're compressed under tons of pressure, and turned into carbon based fossil fuels

You also have a buffer zone that's 17 square kilometers.

Tura Caves

The crate is at the bottom of Ryder's Quarry.

Coal. Hint of silt.

You can see some of the major fossil sites that we've been working in the north.

When that gas blows up, people die.

Your diamond you've all heard, probably seen the movie Blood Diamond.

This is the story of how Harriet came to pay attention.

Now, what does this have to do with energy?

Coal dust.

More coal doctor.

Bioenergy is oil.

Because you've got to include the man who grew the coffee, which was brewed for the man who was on the oil rig, who was drilling for oil, which was going to be made into the plastic, etc.

I know about the dig.

Near one of the stalled harvesters...

The coal is burning.

Massive coal reserves.

Great miners and craftsmen of the mountain halls.

This is incredible!

You had an accident out by one of the harvesters.

It's mined by armed gangs using slaves, child slaves, what the U.N. Security Council calls blood minerals, then traveled into some components and ended up in a factory in Shinjin in China.

The thread that links them all our addiction to carbon based fuels,

I kept thinking about Ryder's Quarry. You know the place?

The coal belt in Northern China,