Globally, the hydrates may contain 700,000 trillion cubic feet of natural gas — enough to power the United States for 1,000 years at current rates of consumption. (discovermagazine.com)
Still, the figure offers a hint at the extent of the world's reserves: more than all the petroleum ever consumed — roughly 830 billion barrels — and enough to fuel the world for some 60 years at current rates of consumption. (discovermagazine.com)