Personality changes for the better with age. July/August 2003, Vol 34, No. 7. Print version: page 14. While many may suspect that people's personalities are fixed in childhood, new research suggests that most people's personalities evolve throughout their lives.
Definition of cloud. 1  1 : a visible mass of particles of condensed vapor (as water or ice) suspended in the atmosphere of a planet (as the earth) or moon.
A molecular cloud, sometimes called a stellar nursery, is a type of interstellar cloud, the density and size of which permit the formation of molecules, most commonly molecular hydrogen. This is in contrast to other areas of the interstellar medium that contain predominantly ionized gas. Molecular hydrogen is difficult to detect by infrared and radio observations, so the molecule most often used to determine the presence of H2 is carbon monoxide. The ratio between CO luminosity and H2 mass is th