However, "clean coal" technologies may not be commercially available for at least 20 years.

Introduction to clean coal technology Where do the emissions go?

I know we can do a better job of clean coal technologies.

I'm going to ask the Congress for $2 billion to make sure that we have the cleanest coal technologies in the world.

But it is wrong to criticize spending on clean coal technology.

For all the questions about the coal technologies, any new plant should at least be an improvement on what is operating now.

Senegal has thus put an option on the coal technology.

These methods and the technology used are referred to as clean coal technologies.

Clean coal technology may prove to be possible, but we cannot pin all our hopes on it at present.

That includes clean coal technology - an area in which, until now, development has been very slow.