David Hockney’s latest portraits show he’s still got it (mostly)

A Victorian medium guided by the dead was an unlikely pioneer of modernism

The Tate’s vast extension is high on good intentions, but low on excitement. It’s all a bit too polite

Abstraction is back, and female artists are in the vanguard of the revival

Maria Merian’s 17th-century butterfly pictures are both stunning natural history and proof of a deep spirituality

We don’t need a £260m pyramid, says our art critic. We need a creative force like the Impressionists to break the grip of the art establishment

While Abu Dhabi awaits a Louvre, the world’s best street artists are being paid to decorate a mall in Dubai. Have they sold their souls?

Maria Lassnig’s self-exposure packs a punch

The biggest art celebrity in the world is showing in a grubby corner of London — at the gallery of the guy who comes in at No 2. They tell us why

George Shaw reboots the Old Masters at the National Gallery