About fifteen years ago I was reading about the Po Valley ridge running synchronously with the Adriatic fault lines on the Earth's crust. It was believed that changes here were fundamental to the forming of European geological features a very, very long time ago.
More and more of these quakes appear to be happening at the deepest levels possible, right at the edge of solidity for the crust. It's all over the planet, not in any one place.
A reasonable conclusion is that the Earth is in store for extremely large tectonic movements with all that entails. Our civilization is very fragile, it wouldn't take half as much change as these quakes seem to indicate is approaching for it to utterly collapse.