Building materials are primarily of two types; natural and artificial or man-made. Natural materials are available in plenty in and around Etna. One needs to be quite sure about the production of any particular material. Based on high demand of any material at any particular place, the rate might be cheap. However, man-made materials are more or less of same price at almost all places in Etna. The supply of building materials is done not only within that specific area but is also sometimes imported. It requires a great deal of human labor to produce and supply material apart from the natural materials, especially in large quantity requirement for building industries.
Each year as a tradition to myself and this green movement website, I write on the events of Earth Day (April 22nd) this year is no exception. I will focus more on some new ideas and representations of our planet Earth. The symbols of Earth Day have been similar throughout the years, including an image or drawing of the Earth..