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

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

Geoengineering - the deliberate, large-scale manipulation of the earth's climate to offset global warming - is a nightmare fix for climate change.

President Obama is in no danger of being judged by history as an eco-radical.

Americans don't pay much attention to environmental issues, because they aren't sexy. I mean, cleaning up coal plants and reining in outlaw frackers is hugely important work, but it doesn't get anybody's pulse racing.

It may be too late for West Virginia to save itself from the ravages of Big Coal. But it's not too late for America.

Among all the tests President Obama faced in his first term, his biggest failure was climate change.