Drones help research eruptions in Sicily and reduce risk to humans

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A volcanologist works with a laser to gather data from a drone in the crater of La Fossa on Vulcano Island, one of the seven islands of the Aeolian Archipelago of Sicily, in Italy, on July 9. MARCO BERTORELLO/AFP

Hovering over the volcano, a buzzing drone pauses in front of a laser beam on the crater's edge, as researchers test whether the device can measure gases to predict eruptions.