"Good" article linked about the earthquake zones in the Pacific Northwest and new evidence that - on average - we are way overdue for an earthquake that will basically devastate Seattle and other coastal cities. Essentially, the 1990s earthquake in San Francisco will be like a fender-bender compared to this.
Scary reading.
http://www.newyorker.com/magazine/2015/07/20/the-really-big-one
Scary reading.
http://www.newyorker.com/magazine/2015/07/20/the-really-big-one