GEOPHYSICAL EARTH--"The historic decision of U.S. scientists to attempt to launch an artificial moon within the next three years is a symbol of man's increasing ability to view the earth as a whole. This ability is also expressed in plans for an International Geophysical Year, for 1957. The frontispiece of this issue shows a man holding a Polynesian navigation map representing a region around the Marshall Islands. Behind the map is a globe devised in about 145 B.C. by Crates of Mallus of the Stoic school. The globe divides the earth into four quarters separated by oceans. It thus poetically anticipates the discovery of North and South America and Australia."