LONDON, Jan. 21 (UPI) -- With new technology emerging to tap into unconventional natural gas reserves in the United States, the impact on world reserves is "huge," an IEA official said.
Anne-Sophie Corbeau, a gas analyst at the International Energy Agency, in a report this week said global gas reserves could have a lifespan of more than 250 years through unconventional gas reserves, including shale. That's roughly double previous estimates.