With an estimated 300 active volcanoes on Earth, the challenge is how to monitor them all to send out early warnings before they erupt. Measuring volcanic gas emissions is also no easy task.
Now researchers have designed specially-adapted drones to help gather data from an active volcano in Papua New Guinea (PNG).
The drones could help local communities monitor nearby volcanoes and forecast future eruptions. Their measurements could also tell us more about the most inaccessible, highly active volcanoes on the planet and how volcanoes contribute to the global carbon cycle.