http://holykaw.alltop.com/china-looks-to-combustible-ice-as-a-fuel-sour-0 That's methane clathrate. One of the cleanest fuel sources you can have. For real. Let's hope they don't have a terrible industrial accident getting it out of the tundra -- like the man said, can you imagine what hundreds of thousands of square miles of methane burning all at once would be like?