Here's a pretty good brief article on methane hydrates as a fuel source that I think captures the core issues quite well. Interesting read for those interested in energy and climate. This whole subject is freaking me out a bit lately and I wonder if we could ever actually safely consider this a fuel source.
http://www.cbc.ca/technology/story/2008 ... algas.html (http://www.cbc.ca/technology/story/2008/10/07/f-forbes-naturalgas.html)
It's the first I've heard about this. It sounds promising, but I didn't like the potentially catastrophic element I didn't like so much.