‘Really Big’ Earthquake Is Coming, Striking 7 Million People in the Worst Natural Disaster in North American History

The last time the Juan de Fuca oceanic plate jolted under the North American plate, unleashing a 9.0 earthquake, was in 1700. With the event scheduled to happen once every 500 years or so, we are due for another any day now. Although it’s not clear what will happen when this mega quake does hit, researchers at the University of Washington recently presented 50 possible scenarios of how the event might unfold.