Every few decades a new energy source comes online and promises to revolutionize the way the world fuels its economies. This was true of the shift from coal and whale oil to conventional oil in the 19th and early 20th century. Then, in the 1960s and 70s came the nuclear power revolution soon followed by renewable energies –hydro, solar and wind power. The most recent and much talked about promise comes from shale gas, which threatens to drastically change global geopolitics. But that’s old news. Tomorrow’s energy revolution, many believe, will be “fire ice,” otherwise known as methane hydrates.