There’s loud music, headbanging and crowds of screaming fans. Only the guitars are missing. At the annual Air Guitar World Championship in Finland, showmanship outshines musicianship.
London's Tate Modern is staging what's thought to be the first retrospective on South Korean-born artist Nam June Paik. Paik - who died in 2006 - is credited with inventing video art, collaborated with pop culture icons including David Bowie, and even coined the phrase "electronic superhighway".