Abundance of the chemical elements in the Sun and outer planets is similar to that in the universe. Due to solar heating, the elements of Earth and the inner rocky planets of the Solar System have undergone an additional depletion of volatile hydrogen, helium, neon, nitrogen, and carbon (which volatilizes as methane). The crust, mantle, and core of the Earth show evidence of chemical segregation plus some sequestration by density. Lighter silicates of aluminum are found in the crust, with more magnesium silicate in the mantle, while metallic iron and nickel compose the core. The abundance of elements in specialized environments, such as atmospheres, or
The Phenomenon of Man be simultaneously present in every corner of the world. Teilhard argues that humanity has thus become cosmopolitan, stretching a single organized membrane over the Earth. Teilhard describes the process by which this happens as a "gigantic psychobiological operation, a sort of mega-synthesis, the “super-arrangement” to which all the thinking elements of the earth find themselves today individually and collectively subject". The rapid expansion of the noosphere requires a new domain of psychical expansion, which "is staring us in the face if we would only raise our heads to look at it". In Teilhard’s view, evolution will culminate in the Omega