Piet Mondrian’s painting may break his $51 million auction record today at Christie’s, as part of the Riggio estate’s sale ...

A 1922 painting by Piet Mondrian fetched $47.6 million at auction, becoming the Dutch artist’s third highest-selling work.

The math that describes the branching pattern of trees in nature also holds for trees depicted in art—and may even underlie our ability to recognize artworks as depictions of trees. Trees are ...