Is the world experiencing more earthquakes now than before?

In the past month, three earthquakes of magnitude 7 or above have struck Indonesia, Colombia and Mexico, killing hundreds of people. In June, two powerful quakes seconds apart levelled swaths of northern Venezuela.

The run of disasters has prompted a question asked after every cluster of big earthquakes: Is the Earth shaking more than it used to?

In this visual explainer, Al Jazeera examin...