Color graphics in AGU publications may be valuable aids to communication, but care will have to be taken to assure that they really contain extra information instead of the same old information in a sexier package. Can anyone tell me, for example, why the essentially monochrome, yellow-red (left) false color image on the cover of Eos, December 7, 1982, contains more information than a good black and white version would?

Further, any graphical display, whether in color or not, ought to be described in comprehensible terms. The caption to the cited cover of Eos was, I found, confusing in the original version in Geophysical Research Letters (GRL) (so much so that I offer a translation1 for the interested reader). The excerpted caption in Eos is all the more confusing for lack of context and illustrates the dangers of excerpting without editing.