What drives earthquakes and why are the Himalayas due for a big one?

Earthquakes are common in some parts of the world and are rare in others, owing to tectonic activity. ThePrint’s Sandhya Ramesh explains the mechanism behind quakes, processes in the interior of the earth, and why seismologists think Himalayas are overdue for a mega quake
The Really Big One by Kathryn Schultz https://www.newyorker.com/magazine/ 2015/07/20/the-really-big-one