The world witnessed an unusually busy week of seismic activity, with 93 earthquakes measuring magnitude 4.5 or higher recorded globally in just seven days, according to the US Geological Survey (USGS). From a devastating double earthquake in Venezuela to powerful tremors off the coast of Japan and Northern California, the spate of quakes has raised questions about whether the planet is becoming more geologically active.

Global quake surge: Why is the earth shaking from Venezuela to Japan?

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