planet 209 embryology and evolution without a title visual footnotes cobalt in the mud possible worlds contact frozen droppings 23 the cerebral cortex zero degree droplets sue morgan at planet 209 footnotes to a blank text visual footnotes All categories nice-brain retinal friends small brains black city logical signs brain suction mental map 207 why 32 items total 1  2  3  4  planet 209 embryology and evolution without a title visual footnotes cobalt in the mud possible worlds contact frozen droppings 23 the cerebral cortex zero degree droplets planet 209: visual & textual footnotes