Compared to coal, which generates almost half the electricity in the United States, natural gas is indeed a cleaner, less polluting fuel. But compared to, say, solar, it's filthy. And of course there is nothing renewable about natural gas.

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.

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.

When it comes to climate and energy, Gates is a radical consumerist. In his view, energy consumption is good - it just needs to be clean energy.

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.

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