Leonard Lauder’s decision to leave the institution coincides with launch of $680m fundraising campaign

Tate’s US patrons applaud the destruction of cake effigies, while MoMA makes life difficult

The museum's new director has assembled his curatorial team and is preparing to steer it on a radical new course

Gallery shows of Hesse’s fragile sculptures are rare

Compare and contrast the last decade of the master's oeuvre

Few dealers, scarce material, but a growing audience

Ossian Ward investigates European and US perspectives and the issues of conservation and ownership

Kiki Smith responds to recent attacks on her work by Met director Philippe de Montebello

The Calder foundation cites fears concerning authenticity

“Sunshine and noir” explores the dramatic contrasts of Los Angeles as seen through the art produced there over the past forty years

The major show chronicles the many faces of Warhol's fascination with fame

On the one hand, official recognition, on the other, the problem of fakes

Books versus Basquiats?

The artist's complicated oeuvre makes it hard to judge if some works are forged - or if instead he was just having an off day

At 83,000 square feet it is bigger than the Whitney

Collection leasing provides a fundraising alternative for some museums, and a surrogate permanent collection for others

Music Television and Madonna sponsor her late lover

Whitney director, David Ross, gambles on his political correctness

The selection of the tobacco corporation as first winner is testament to its long-term relationship with the museum

David Ross, the new director reveals his ideas

After Warhol and Johns, it’s the turn of the globe-trotting