Atmosphere of Earth relatively warm air above a colder one), and in others by a zone which is isothermal with height. Although variations do occur, the temperature usually declines with increasing altitude in the troposphere because the troposphere is mostly heated through energy transfer from the surface. Thus, the lowest part of the troposphere (i.e. Earth's surface) is typically the warmest section of the troposphere. This promotes vertical mixing (hence, the origin of its name in the Greek word τρόπος, "tropos", meaning "turn"). The troposphere contains roughly 80% of the mass of Earth's atmosphere. The troposphere is denser than all its overlying atmospheric
What Where the metallic floor accentuate the chilly atmosphere. O'Donnell said in interview: "[T]here is no set in the original play, but I argued that the whole play is about power and the abuse of power, and how information is power, so we used the library as a metaphor for somebody who has control of all the power and all the information. When it came to casting, I was looking for a particular type of actor – somebody who could bring a sort of menacing quality to the screen. There is a lot of menace in the play. "What Where" is about