If estimates of undiscovered resources and future improvements in technology are included, reserves are likely to last well into the next century.

FORBES: We Live In An Age Of Energy Abundance

The North Slope natural gas hydrates make up 11.5 percent of the volume of gas within all other undiscovered, technically recoverable gas resources in the United States -- frozen or not, the USGS estimated.

CNN: Study: Tap natural gas from Alaska's frozen areas