Agnes Martin

A solo exhibition at Lagune Ouest, Copenhagen, takes a nostalgic look at the favoured haunt of Danish intellectuals

Petition launched to save the New Art Gallery Walsall; Galerie Perrotin to open a Tokyo space

The enduring intensity of Agnes Martin and an H&M advertising campaign: the London-based artist shares her Portfolio

The importance of an artist's biography

Patrick Staff, Diego Velázquez and Mad Max: Matthew McLean shares his highlights from 2015