Art-world luminaries Hans Ulrich Obrist, Cao Fei, and Jeff Koons speak about the lasting cultural impact of Marcel Duchamp.

Artists have been using recycled materials ever since Marcel Duchamp took a urinal, turned it upside down and dubbed it "Fountain" nearly a hundred years ago. But lately the cause has gained a new ...

One of the most famous examples is Marcel Duchamp's "Fountain," an inverted urinal simply signed "R. Mutt," which he argued elevated the otherwise prosaic object into a "readymade" sculpture.