Charles Saatchi and Eli Broad both collect him, but only 13 US museums have examples of this artistic rebel’s work

As the Japan Society presents a retrospective of Yoko Ono’s work, she talks about the avant-garde in the 60s and her latest work

Museums race to list questionable paintings

The heir to the cosmetics fortune is creating his own museum and would like to see art returned to Holocaust victims, but how effective is he actually?

The upcoming Met exhibition presents the whole career of the photographer famous for his images of the Depression

The Spanish involvement with Nazi-looted art and the part played by the Austrian resistance in saving works of art are among the revelations in this book

Matisse Odalisque restored to the Rosenberg family

Richardson talks about his mentor and one time lover, Douglas Cooper—fiendish and funny art historian, aesthete and champion of Cubism

The council on looted art has postponed its decision on whether to return five paintings in the Oesterreiches Galerie to the granddaughter of Alma Mahler-Werfel

The director of the Hermitage, Mikhail Piotrovsky, outlines the possible implications for his museum of the NATO campaign

A Monet returned; a Bonnard, Léger and Matisse still claimed

The artist speaks ahead of his upcoming Dallas exhibition on his varied historical influences

Frank Gehry plants a horse’s head in a Richard Meier space

Beuys drawings based on the Renaissance master’s famous Codices Madrid show revolutionary artist experimenting with the ideas of another

Christie’s, US Customs, a bankrupt dealer, hoards of lawyers, and much time and money played a part in this

No binding agreements were reached and little effect on restitution is expected

The man behind the Mitchell Prize, awarded last month, is also a major collector of Pre-Columbian gold sculpture

One year after the acclaimed opening, the director of New York’s Guggenheim talks about the Bilbao Guggenheim, his money-raising and his new expansion plans Spanish commentators admire the building and its success with the public but some chafe at its artistic dependence on the New York museum

Disputed Degas to go to the Art Institute of Chicago

Computer-glitch software, Norton Utilities, has made the fortunes of Peter and Eileen Norton

Critics pointed out that the AAMD has no enforcement provision for members who violate its guidelines, not even its own mediation process

Veteran’s reluctant admission of taking plunder clinches case

Jackie’s companion targeted for buying $1 million of hot Greek body parts

The artist's technique has changed from photo-realist air-brushing to collage, dot-painting, and more recently, to thickly painted grids

Museum directors summoned before the House of Representatives

This mega-show spanning five millennia focuses on “diversity rather than unity”, insists its organiser Sherman Lee, but does it risk homogenising Chinese art into a timeline?

The collection was stolen during Nazi occupation of France