The NYT is reporting that a study due out today by the Potential Gas Committee finds that the country's natural gas reserves have grown by 35 percent, the largest increase in committee's 44-year reporting history. The number: 2,074 Tcf (2008). The prime mover: Shale gas. Very interesting.
[Update: According to this article (also in the NYT), the increased reserves play a part in the climate debate going on now in Washington. For more on the report, see here (including how to get a copy).]