Two earthquakes of a 7.0 or greater magnitude have struck within days of each other in Alaska and Japan, prompting worries another big temblor could be on the way. The first quake hit in Alaska on Dec ...

This map depicts the predicted types of soil in Tokyo with an unprecedented level of detail. Such maps are essential for urban planning and earthquake risk assessment, as they reveal areas that are ...

That expedition used Japan's ultra-advanced drilling ship Chikyū, and marked the first time scientists had ever drilled directly into the fault zone of a recent megathrust earthquake. They drilled ...