Venezuela earthquakes: What happened, and is geologic study really worth anything?

Video discussing the Venezuela "doublet" earthquake...what happened, where it happened, and what we already knew about the area. Sometimes it looks like geologists just react to these events, but there is actually tremendous work devoted to understanding hazard potential and what CAN happen. This information guides building practices to reduce deadly outcomes. We can't predict or stop earthquakes, but we can be prepared for them if we know where they can happen, how they may move the Earth, and how big they can be.