Seeing through the cracks

While rescue workers in Japan continue their search for missing persons amid the rubble in Sendai and beyond, geologists are sifting through seismic data and satellite images for hints to what caused one of the most catastrophic earthquakes in recorded history. For the past week, scientists around the world have posted charts and maps on blogs and websites to help describe the extent of the quake, and the vulnerabilities that possibly triggered the massive rupture.

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