A mysterious sculpture at CIA headquarters has baffled the world for decades, inspiring codebreakers like Elonka Dunin.

But then, neither was this: Meet Robo. One of the brigade of robots taking over sculpture. We watched as Leonardo da Vinci's trademark hat was adjusted. Not with a hammer and chisel, but a 13-foot ...

A University of Arizona researcher has escaped from the grasp of the Baga Serpent, at least for now. An appeals court in New York has dismissed a multimillion-dollar lawsuit against UA radiocarbon ...