Researcher Tjarda Roberts from the CNRS in Paris collect data from gas emissions during a mission in the crater of La Fossa, on Vulcano Island, one of the seven islands of the Aeolian Archipelago of Sicily, on July 9, 2026. A team of researchers from Germany are testing a new system for measuring volcanic gases to better anticipate future eruptions. Hovering over the crater of La Fossa, a drone positions itself in front of a laser beam set at the edge of the chasm on Vulcano, off Sicily, and collect data. (Photo by Marco Bertorello / AFP via Getty Images)

Vulcanologists collect data from gas emissions with a drone and a laser during a mission in the crater of La Fossa, on Vulcano Island, one of the seven islands of the Aeolian Archipelago of Sicily, on July 9, 2026. A team of researchers from Germany are testing a new system for measuring volcanic gases to better anticipate future eruptions. Hovering over the crater of La Fossa, a drone positions itself in front of a laser beam set at the edge of the chasm on Vulcano, off Sicily, and collect data. (Photo by Marco Bertorello / AFP via Getty Images)

A vulcanologist from the University of Mainz walks with instruments on his back during a mission to collect data from gas emissions in the crater of La Fossa, on Vulcano Island, one of the seven islands of the Aeolian Archipelago of Sicily, on July 9, 2026. A team of researchers from Germany are testing a new system for measuring volcanic gases to better anticipate future eruptions. Hovering over the crater of La Fossa, a drone positions itself in front of a laser beam set at the edge of the chasm on Vulcano, off Sicily, and collect data. (Photo by Marco Bertorello / AFP via Getty Images)

Researcher Tjarda Roberts from the CNRS in Paris collect data from gas emissions during a mission in the crater of La Fossa, on Vulcano Island, one of the seven islands of the Aeolian Archipelago of Sicily, on July 9, 2026. A team of researchers from Germany are testing a new system for measuring volcanic gases to better anticipate future eruptions. Hovering over the crater of La Fossa, a drone positions itself in front of a laser beam set at the edge of the chasm on Vulcano, off Sicily, and collect data. (Photo by Marco Bertorello / AFP via Getty Images)

Vulcanologists collect data from gas emissions with a drone and a laser during a mission in the crater of La Fossa, on Vulcano Island, one of the seven islands of the Aeolian Archipelago of Sicily, on July 9, 2026. A team of researchers from Germany are testing a new system for measuring volcanic gases to better anticipate future eruptions. Hovering over the crater of La Fossa, a drone positions itself in front of a laser beam set at the edge of the chasm on Vulcano, off Sicily, and collect data. (Photo by Marco Bertorello / AFP via Getty Images)

A vulcanologist from the University of Mainz walks through gas during a mission to collect data from gas emissions in the crater of La Fossa, on Vulcano Island, one of the seven islands of the Aeolian Archipelago of Sicily, on July 9, 2026. A team of researchers from Germany are testing a new system for measuring volcanic gases to better anticipate future eruptions. Hovering over the crater of La Fossa, a drone positions itself in front of a laser beam set at the edge of the chasm on Vulcano, off Sicily, and collect data. (Photo by Marco Bertorello / AFP via Getty Images)

The drone piloted by volcanologists from the University of Munich flies during a mission to collect data from gas emissions in the crater of La Fossa, on Vulcano Island, one of the seven islands of the Aeolian Archipelago of Sicily, on July 9, 2026. A team of researchers from Germany are testing a new system for measuring volcanic gases to better anticipate future eruptions. Hovering over the crater of La Fossa, a drone positions itself in front of a laser beam set at the edge of the chasm on Vulcano, off Sicily, and collect data. (Photo by Marco Bertorello / AFP via Getty Images)

This aerial view shows people walking on the edge of the crater of La Fossa, on Vulcano Island, with Lipari and Salina islands in the background, in the Aeolian Archipelago of Sicily, on 9 July 2026. A team of researchers from Germany are testing a new system for measuring volcanic gases to better anticipate future eruptions. Hovering over the crater of La Fossa, a drone positions itself in front of a laser beam set at the edge of the chasm on Vulcano, off Sicily, and collect data. (Photo by Marco Bertorello / AFP via Getty Images)