from the make-up-your-mind-son-it-is-mud-or-is-a-volcano? dept.
davide-nature writes "The freakish event has been blamed on a company that was drilling for natural gas nearby. But scientists have found a rock formation deep below the surface and shaped like a parabolic antenna. It could have focused seismic waves from an earthquake that occurred shortly before the eruption, and onto a clay layer. The clay then liquefied and somehow found its way to the surface."
You can bring any calculator you like to the midterm, as long as it
doesn't dim the lights when you turn it on.
-- Hepler, Systems Design 182