22 Mar 2013 Methane hydrate joins shale gas and deep sea gas
Methane hydrate is found all around the world beneath the seabed near continental margins as well as in the Arctic under land. Any combination of low temperature and high pressure causes methane and water to crystallise together in a sort of molecular lattice. Nobody knows exactly how much there is, but probably more than all the coal and oil put together, let alone other gas.