Show precision of gravitation allows man to live here precariously writer says has the thought occurred to you that there might be a time when summer never n will come again we are accustomed to think ot of our ordinary seasonal variations in temperature as being of considerable magnitude to us degrees fahrenheit is unbearably hot 30 degrees below zero lero insufferably cold when either 0 of these temperatures is reached according to donald B harris in the coronet we feel that nature must be exerting herself strenuously in order to make us uncomfortable in order to get even a taint faint idea ol of how critical our temperature adjustment is we must imagine a very large heat regulator with a dial 14 inches long one end ot of this dial is degrees below zero degrees above zero the other then the normal terrestrial range of temperature is represented by a line on the dial narrower than the thickness ol of the thinnest piece ot of paper if we are to maintain temperatures pera tures on earth as they are today the pointer must be set iet ly in the center of this line if it is moved to one side or the other by even so much as the thickness of a hair average temperatures on earth will either drop tar far below freezing or rise above the boiling point of 0 water it is literally liter aUy true that all lite life on earth is hanging by a thread the thread 0 of gravitation which links us to the sun and holds the earth within the beneficent sphere ot of its radiation if this thread should break or if it should stretch ever so slightly or contract even by the smallest amount temperature conditions would so change on earth that we would all immediately freeze to death or perish in a horror ot of suffocation and flame |