One of my favorite activities to do with museum visitors in the Mississippi River Gallery is to show them scat samples (the scientific name of animal poop). They're actually rubber copies of the scat, but I don't tell people that right way and get some very vivid reactions. I have now graduated up to identifying large African animal scats. You can too by going to this website. Okay, I think I've hit my quota of potty topics for the week. On to more serious science matters.

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