After two major earthquakes rocked the state, is California ready for ‘the Big One’?

Two powerful earthquakes shook Southern California in back-to-back days last week, stoking fear among residents that a major earthquake isn’t far off. Jerome F. Hajjar, a professor of civil and environmental engineering at Northeastern, says it’s not a matter of if California will experience a huge, devastating earthquake, but when. And only some of the buildings in the state are prepared to withstand such a quake, he says.