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

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

Some studies have shown that natural gas could, in fact, be worse for the climate than coal.

This Dewdrop World is a beautiful, courageous, intimate film about love and loss. It may also be the deepest meditation on climate change that I've ever seen.

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.

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