Looking to change your life? A visit to the "Pyramids of Mars" exhibition might help. The posters, tapestries, benches, films and installations "suggest practical and imaginative ways of changing lives" and aim to "challenge our ideas about how society should be run." The particular notions due to be shaken are not specified, but they might include the hidebound conviction that we should live in houses and the boring convention that if you want to communicate it's best to target people. "Pyramids of Mars" is a free show at the Curve in London's Barbican Centre, running until Mar. 25, when it moves to the Trapholt Museum in Kolding, Denmark.