Coal and nuclear power are the backbone of America's electricity system, providing more than 70% of U.S. power. They're also both "dangerous and dirty" energy sources for environmentally-minded types, like the L.A. Times edit page. What else do they have in common?

Digging for answers (AP) Long-term storage liabilities may be a bigger obstacle than cost or technology development. Nuclear power is still trying to find a solution to long-term storage of radioactive waste. Now, it's clean coal's turn.

That...