News flash: In the summer of 1999, the residents of Washington State, British Columbia, and the surrounding area didn’t experience a magnitude 6.7 earthquake.
That’s right, they didn’t feel a thing, although lower portions of the Earth’s crust moved 20 millimeters. In a sudden surge, such a shift would have spawned an impressive quake, but the movement happened over a period of 6 to 15 days.
Log in
Subscribers, enter your e-mail address for full access to the Science News archives and digital editions.