I was walking back into the house when Becky met me at the door, excited: “I think we just had an earthquake! Did you feel it?” She’d heard a low roar, she said, and then a closet door beside her rattled, as if something inside wanted out. “It went on for maybe 20 seconds.” This was on May 10, at 9:04 a.m., to be exact. And all I could say was “What?”