 Such close monitoring may allow scientists to detect pre-eruptive changes in volcanoes and movements in fault lines that precede earthquakes, providing an early warning of imminent natural hazards.Other future applications could include tracking the rate of global warming by monitoring the movement of glaciers and the tracking of floods and mudslides.Earlier this morning, Mission Specialist Dan Bursch took a break from his work to provide a television tour of the crew's orbital home office, explaining the shuttle's displays, controls, computers and cameras, as well as living accommodations.