Associated Press: Governors pushing alternative energy development are not shying from coal, a major culprit in global warming but also a homegrown energy source and an economic lifeline for many states. Leaders of coal-rich states say clean-coal technology is a must. Governors from states without coal want more evidence the technology works. "There’s no doubt there’s a tension and there’s no doubt there is very rapidly growing public opposition to coal," said Gov. Jim Doyle, D-Wis. …