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
Centre of the Earth restored. The architect for the timber-framed building, which demonstrates the sustainable use of natural resources, was David Lea, renowned for his ecologically sensitive designs. Keith Hall, a founding member of the Association for Environment Conscious Building, built the Centre. The building and its grounds are easily accessible to people with limited mobility. The Centre is used as a base for a range of educational activities including: Centre of the Earth The Centre of the Earth is a purpose-built environmental education centre in Birmingham, England, run by the Wildlife Trust for Birmingham and the Black Country. It is 1.5 km away