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Have a friend remove an object from a room you know well--say, a napkin holder from your kitchen--and then see if you can guess what he's taken away. Even if you don't know the answer, your eyes will unconsciously fixate on the stretch of countertop next to the toaster where the holder usually sits. Remembering what goes where in your kitchen is called relational memory, and now scientists have shown that your unknowing stare may be a sign that your brain remembers even when you don't.

"Like much of the other containers and food scraps from the North Baltimore farm-to-table restaurant Woodberry Kitchen, the oyster shells don't go in the trash. The raw bar castoffs -- about 2,000 per week -- are sent to an Eastern Shore oyster hatchery and then back to the Chesapeake Bay."