Ben Luke learns about a new Edward Hopper biography and digital editor Alexander Morrison visits a new private museum in Georgia. Ben Luke also hears about an installation by the Arte Povera artist Marisa Merz, who is now being celebrated by three institutions across Turin

Three institutions are collaborating to mark the centenary of the movement’s only female artist

The Turin-based foundation will foreground the Sicilian capital's history as a "city for immigrants" at the crossroads of Europe and Africa

The intensely private artist won the Golden Lion for lifetime achievement at the 2013 Venice Biennale