Playing mind games with Joseph Kosuth
As the Hungarian-American artist celebrates his 80th birthday, is his brand of conceptual art still as radical as it once was?
The puckish figures of Franciszka Themerson
The Polish-born artist’s paintings and drawings may have an air of the doodle, but her politically radical work is thrillingly inventive
The everyday radicalism of Joanne Leonard
A photo taken by the artist in 1979 arranges the documents of a family’s life in humorous – and radical – style
Can Britain’s fragile pottery industry survive?