‘Only ideas can change the world’: an interview with the Zero group’s Heinz Mack

In the breaks between the slalom and the downhill, those traveling to St Moritz for this years FIS Alpine World Ski Championships (until 19 February) can also make time for some quiet reflection, courtesy of the German artist Heinz Mack. On a footpath by the citys lake, framed by evergreen trees, the nearby mountains and with a clear view to the town, stand nine monumental golden columns, each more than seven metres tall and covered in hundreds of thousands of mosaic tiles.The installation, tit