Sistine Chapel ceiling on the fictive cornice. Pictorially, the Ignudi appear to occupy a space between the narrative spaces and the space of the chapel itself. (see below) Along the central section of the ceiling, Michelangelo depicted nine scenes from the Book of Genesis, the first book of the Bible. The pictures are organized into three groups of three alternating large and small panels. The first group shows God creating the Heavens and the Earth. The second group shows God creating the first man and woman, Adam and Eve, and their disobedience of God and consequent expulsion from the Garden of Eden where
Restoration of the Sistine Chapel frescoes have been predicted by previous restorers. One of the major dangers to the frescoes is automotive exhaust, and they are also vulnerable to the effects of the crowds of tourists that pass through the chapel every day, bringing with them heat, humidity, dust and bacteria (the latter of which can biodegrade paints and pigments). The clean plaster surfaces are more in danger from these destructive elements than they were when they were covered with a layer of smoky wax. Previously, the Sistine Chapel's only ventilation was from its windows in the upper level of the walls. To prevent exhaust fumes