Fact of the day

The creeping fault: it moves for years without a quake

California's Hayward Fault creeps a few millimeters a year without quakes. An offset curb in Hayward tracked this creep for decades until a city crew repaired it in 2016. Creep does not make the fault safe: the same fault produced a magnitude 6.8 earthquake in 1868.

Source: CNBC