12 Flavors of Rainbows Identified

Why are there so many songs about rainbows? There are 12 types of rainbows, distinguished by various characteristics, the study suggests. Rainbows can even appear as twins, triplets or quadruplets, Jean Ricard, a researcher at the National Meteorological Research Center, in France, said here yesterday (Dec. 17) at the annual meeting of the American Geophysical Union.