Earthquake-triggered lightning?
Physicists offer a possible explanation for the rare claim of earthquake “lights”
![](https://www.snexplores.org/wp-content/uploads/2019/11/lightning_free.jpg)
People typically associate lightning with storm clouds, as shown here. But in some rare instances, earthquakes appear to generate the same electrical discharge. The big difference: That lightning can occur despite a clear sky, one free of any clouds.
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