Hovering over the volcano, a buzzing drone pauses in front of a laser beam on the crater’s edge, as researchers test whether the devices can measure gases to predict eruptions. Hovering over the volcano, a buzzing drone pauses in front of a laser beam on the crater’s edge, as researchers test whether the devices can measure gases to predict eruptions. On the Aeolian island of Vulcano, off the coast of Sicily, German researc... [1342 chars]
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