The areas that still lack cell coverage are spread out and sparsely populated.

In the U.S., with just a few transmitters at 1.4 GHz and tiny receiver antennas, coverage has to be a concern. And with digital TV, it either works or it doesn't.

As the subway extended, other areas were populated.

Quakes of this size, in populated areas, can be just devastating.

There are holes. These are highly populated areas and there is nothing in the Glades.

It tends to happen more often in the heavily populated areas because that's where the parties tend to be more active. It's no longer unusual.