Shale gas and tight oil are giving the US its biggest, most rapid boost in energy production in history. But it will probably prove fleeting.
One hard truth: The era of cheap oil is over. Even the recent glut of US oil and gas was driven by high prices, which gave industry the incentive to use expensive, risky drilling technology.
Vice President Joe Biden proposes spending $53 billion on a national high-speed rail network, but important Republicans in the House are less than enthused.