From an MSNBC story today: The US Geological Survey estimates that 4.3 billion (that's billion with a "B") barrels of oil may be trapped in huge shale formation under North Dakota, Montana, Saskatchewan, and Manitoba.
Some in the oil industry are skeptical, but you've got to love the optimism.
In a related story, the oil sands of Alberta are quietly becoming a major source of US oil imports.
I don't know if this is good news or not.
In the short term, obviously, major new sources of oil, especially if they are found under countries where there are not significant portions of the population who want us all dead or praying the same way they do, are welcome.
However, the long term answer to many of the worlds problems is going to be found in an alternative to oil. We've been saying it here for a long time.