Ice that burns could provide immense energy A! future, if only scientists co figure out how to g ground. Gas hydrate, mainly fro methane, may contain twicel much energy as all fossil fuels P together. But it exists several hundred metres below the f1 and fizzes away when brought the surface, said a panel of expe at a meeting of the Ameri:3 Association for the Advancement of Science (Earth, June 1994dw Harvesting gas hydrate also raises concerns about how the methaned released into the atmosphere, might contribute to the greenhouse effect.