Play-Doh has been charming kids since the 1950s — but believe it or not, the modeling compound (no, it’s not technically clay) was originally invented as a way to clean soot off wallpaper. As people ...

When the Whitney Museum of American Art staged its blockbuster retrospective of Jeff Koons in 2014, the most photographed work was undeniably Play-Doh (1994–2014), an 11-foot-tall aluminum sculpture ...