Philip Guston, Cornelia Baltes, Stan Douglas: this week’s new exhibitions

Philip Guston | Cornelia Baltes | James Turrell | Pia Camil, Pablo Helguera, Pedro Reyes | Stan Douglas | Luke Fowler & Mark Fell | Carsten HöllerPhilip Guston was well into his 50s when he became the artist we know today. Prior to his career as the premier painter of life as a twisted comic-book horrorshow, he was a leading light of New York’s deeply serious abstract expressionists. In the late 1960s, however, something snapped, and he turned his masterly brushwork to something new. Insp