David Hockney, iPad Artist

“Different fingers are used for varying effects, and even though he is right-handed, he often draws with his left hand, giving the final works a quality that he’d have difficulty replicating with his stronger arm. The results throws up questions about the very nature of “originals” and ‘reproductions’, and the value – aesthetic and monetary – of the work.”

In the Subway’s Hidden Depths, Genuinely Outsider Art

“A vast new exhibition space opened in New York City this summer, with a show 18 months in the making. On view are works by 103 street artists from around the world, mostly big murals painted directly onto the gallery’s walls.” The show, called the Underbelly Project, is in one of the city’s disused subway stations: the art is literally illegal, and the artists – if found out – could be prosecuted for their work.