Tate Modern in London has received a monumental painting by Abstract Expressionist star Joan Mitchell from ...

Joan Mitchell's painting "Iva" is the centerpiece of a major donation from Florida-based philanthropists Jorge M. Pérez and Darlene Pérez that also will help Tate expand its collection of works by ...

Land Art, also known as Earth Art, is a name applied to artworks that operate within the natural realm rather than in ...

In a novel use of statistics, researchers estimate the number of unattributed paintings, known as "sleepers," by the famous ...