Much of the high quality anthracite coal is gone,

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?

And then they are fossilized over millions of years.

Here's a piece of coal.

Coal consists mostly of carbon.

Coal. Hint of silt.

Coal is a fossil fuel.

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

Latin'calx 'for'lime'

Coal dust.

Bioenergy is oil.

We have used our ration of coal for the week.

That we keep for ourselves ...

Let me tell you a little bit about this chemistry of oil.

When that gas blows up, people die.

The dead have been covered with lime.

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

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

Now, what does this have to do with energy?

More coal doctor.

The coal belt in Northern China,

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

They substituted coal for oil.

Geologists scoured America.

It has to be about transition.

The coal is burning.

Massive coal reserves.

A crow is as black as coal.

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

Limestone pie and hot melted silver.

Well efficiency and gas can displace them all at just below their operating cost and, combined with renewables, can displace them more than 23 times at less than their replacement cost.

Shale is an exceptionally poor fuel, pound for pound containing about one third the energy of a box of breakfast cereal.

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

The coal in the stove is burning.

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

But after some nagging, I got him to do that.

It looks beautiful.

Of those, only nuclear and hydro are green.

They burned some coal.

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

it's a hot coal.

One unit like this is an energy unit of fossil fuel oil, coal or gas.

This country is rich in coal.

One of the coal industry's ads around Christmas was this one.

And so the question is Can you actually get that to zero?