"Don't bother," Mike answered. "I'll carry the tray, I can see." He could see, as they all knew, in almost total darkness.  Jubal said that his exceptional night-sight probably came from the conditions in which he had grown up, and Mike grokked that that was true but he grokked also that there was more to it than that; his foster parents had taught him to see.  As for the night being warm enough, he would have been comfortable naked on Mount Everest, but he knew that his water brothers had very little tolerance for changes in temperature and pressure; he was always considerate of their weakness, once he had learned of it.  But be was eagerly looking forward to snow - seeing for himself that each tiny crystal of the water of life was a unique individual, as he had read - walking barefoot in it, rolling in it.