'Dragon eggs' lowered into volcanoes could help scientists monitor for clues of future eruptions

'Dragon eggs' lowered into the heart of volcanoes using drones could help monitor for clues of future eruptions with more precision, scientists have revealed. Such extreme, hazardous and unpredictable environments present a very difficult challenge to reliably record volcanic behaviour. For some volcanoes, it is simply too dangerous for humans to get close enough to take readings manually. However, scientists have got around this problem by creating highly sensitive pods that can be positioned in dangerous locations to provide real-time data on eruptions. Dubbed'dragon eggs', scientists say these devices could also monitor other natural phenomenon such as glaciers, geological faults and man-made hazards such as nuclear waste storage sites.