China quake forces rethink over hazard maps

WHEN more than 65,000 people died in May in a region of China thought to be at a low risk of quakes, geologists realised their hazard maps must have serious shortcomings. Now a coalition of geologists from the Massachusetts Institute of Technology and the Chengdu Institute of Geology and Mineral Resources, Sichuan, say that similar regions may also be in danger and that seismic hazard maps should be redrawn. Using historical, geological and GPS records,
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