There's some questions as to what you should be doing with this stuff.

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

Now, what does this have to do with energy?

Coal dust.

They substituted coal for oil.

Coal is a fossil fuel.

The argument that it's a bridge fuel makes sense, because the amount of CO2 per unit of energy is lower than oil and coal, correct?

Here's a piece of coal.

The coal is burning.

Coal. Hint of silt.

When that gas blows up, people die.

English economist William Stanley Jevons realised that Better steam engines made coal a more cost effective fuel source, which led to the use of more steam engines, which increased total coal consumption.

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

More coal doctor.

I'm very glad to be here with you today and be a part of this discussion.

We can get many coals here.

Bioenergy is oil.

Coal consists mostly of carbon.

A crow is as black as coal.

But as you think of coal, this is what burned wheat kernels look like.

Massive coal reserves.

The reason why is because of the radioactive releases from coal.

Coal is not always black.

Oil is a problem, and coal is the most serious problem.

(Laughter)

Petroleum was replacing coal as fuel.

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

All around me I sensed evil beings poised with daggers.

The coal belt in Northern China,

Geologists scoured America.

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.

But in the meantime, for the next decade at least, the name of the game is hydrocarbons.

The coal in the stove is burning.

The coals are burning red.

They burned some coal.

it's a hot coal.

But I brought along here a lump of coal right here, one lump of coal.

This country is rich in coal.

We have used up the coal.

As of 2007, coal generates 48.5 of U.S. electricity.

Tesla's insight was profound.

And here's a different way of mining coal.

When the Industrial Revolution started, the amount of carbon sitting underneath Britain in the form of coal was as big as the amount of carbon sitting under Saudi Arabia in the form of oil.

You burn the gas, that radon's being released. Nobody counts that radon against the gas.

Arithmetic deals with numbers.