The loose assemblage of paper and string Manu Prakash pulls from his pocket doesn't look like much. And in a way, it's not---just 20 cents' worth of materials you can buy at an art supply store. But ...

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When I go into the Pharmacy exhibit, I think of the tune from “Sound of Music” that has the line, “brown paper packages tied up with strings, these are some of my favorite things.” Our Historical ...

TimesMachine is an exclusive benefit for home delivery and digital subscribers. About the Archive This is a digitized version of an article from The Times’s print archive, before the start of online ...