*ping*
Thanks fieldmarshaldj. Dang, the "go at night" joke has already been revisited a bunch of times, and starting with the first reply, impressive. I'm takin' the egghead way out:The HistoriesDuring the winter, the sun is driven out of his usual course by the storms, and removes to the upper parts of Libya. This is the whole secret in the fewest possible words; for it stands to reason that the country to which the Sun-god approaches the nearest, and which he passes most directly over, will be scantest of water, and that there the streams which feed the rivers will shrink the most.
by Herodotus
tr by George Rawlinson
Book II -- Euterpe