Some studies suggest that the Arctic Ocean may be ice-free by the end of the century.

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

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

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

In the world of energy politics, the sudden vanishing of the word 'coal' is a remarkable and unprecedented event.

In the United States, we do a pretty good job of protecting iconic landscapes and postcard views, but the ocean gets no respect.

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