Have we failed to slow global warming pollution in part because climate and environmental activists have been too polite and well behaved?

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

Extracting oil from the tar sands is a nasty, polluting, energy-intensive business.

Obama's record on climate issues is not all bad.

Climate change is a global issue - from the point of view of the Earth's climate, a molecule of CO2 emitted in Bejing is the same as a molecule emitted in Sydney.

Bloomberg's $50 million is not going to revolutionize the electric power industry. But his willingness to fight is already inspiring others to see Big Coal differently.

It's not all Obama's fault: His plans to rebuild America's energy infrastructure have been hampered by the recession, and his efforts on global warming have been stymied by Tea Party wackos and weak-kneed Democrats in Congress.