The U.S. has come pretty close to energy independence in recent years thanks to a surge in domestic shale oil and natural gas production and the harnessing of solar and wind energy. That independence, however, is fragile.
Energy infrastructure has increasingly come under assault, and analysts said the attack that cut off fuel supplies this week should be a “wake-up call.”
The national average for a gallon of regular gasoline rose 2 cents on Tuesday, and some airlines began to take small measures in response to the shutdown.
