The biggest tab the public picks up for fossil fuels has to do with what economists call 'external costs,' like the health effects of air and water pollution.

In the world of energy politics, the sudden vanishing of the word 'coal' is a remarkable and unprecedented event.

Bloomberg is famously impatient with beltway politics and believes that to get anything done you need to work from the ground up.

Nowhere has the political power of coal been more obvious than in presidential campaigns.

When it comes to energy, cost isn't everything - but it's a lot. Everybody wants cheap power.