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Math can get pretty loopy, at least when we try to explain it. But according to author Alex Bellos, the most straightforward mathematical concept might be the loopiest. Then producer Mark Philips introduces us to William Basinski, a composer who loops analog tape to create a unique sort of ...

Ai Weiwei is China’s most famous artist, and an international celebrity.  But inside the country, the government would prefer he remain unknown.  While he's attracted Western headlines as a witty, trouble-making critic of the regime, he’s mostly been left alone by the authorities.  But in 2009...

Slideshow: Ai Weiwei

The late artist Sol LeWitt was famous for huge wall drawings created directly on the walls of a museum or a collector's home. When WNYC's Mark Phillips saw one, he decided to recreate it in his own apartment. But is it "real," or is it plagiarism?

Most New Yorkers give a tip to their cab drivers, but cabbie Dave Freedenberg looks for a different kind of tip. WNYC’s Mark Phillips has the story.

Dave Freedenberg's website