Structure of the Earth the crust, upper mantle, lower mantle, outer core, and inner core. The geologic component layers of Earth are at the following depths below the surface: The layering of Earth has been inferred indirectly using the time of travel of refracted and reflected seismic waves created by earthquakes. The core does not allow shear waves to pass through it, while the speed of travel (seismic velocity) is different in other layers. The changes in seismic velocity between different layers causes refraction owing to Snell's law, like light bending as it passes through a prism. Likewise, reflections are caused by a large
What We Do Is Secret (novel) What We Do Is Secret (novel) What We Do Is Secret is a novel by Thorn Kief Hillsbery, published by Villard in 2005. "What We Do Is Secret" takes place in Los Angeles in 1981, six months after the death of Darby Crash (lead singer of the Germs). It is narrated by a gay street kid named Rockets Redglare, who knew Darby personally. All the action occurs over the course of 24 hours, on Rockets' 13th birthday. Rockets was ten years old when he first met Darby Crash, lead singer of LA punk band the Germs. He and Darby had