⚡Cool, new science research ⚡

Scientists recorded hundreds of “thunderquakes” using buried fiber-optic cables — and found they can act like an X-ray, revealing what’s happening up to 300 feet beneath the surface.
https://theconversation.com/using-thunderquakes-to-x-ray-earth-a-new-study-shows-urban-seismology-in-action-289961