When President Barack Obama said in his State of the Union speech this year that the United States has a supply of natural gas that can last nearly 100 years, he was using a quick-and-dirty, back-of-the-envelope computation that is nonetheless rooted in recent geological research.I was happy to see someone else uses "back-of-the-envelope calculations."
A few story lines there, I suppose, but need to move on. I am way behind on blogging.
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