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18 September 2019
Ancient, distinct, continent-sized regions of rocks, isolated since before the collision that created the Moon 4.5 billion years ago, exist hundreds of miles below the Earth’s crust, offering a window into the building blocks of our planet, according to new research.
11 December 2013
Since the Comprehensive Nuclear Test Ban Treaty (CTBT) opened for signatures in 1996, there has been a growing interest in monitoring for underground nuclear test explosions. When a nuclear bomb goes off underground, it produces enough force for seismographs to detect it.