Gemma Battenbough . Articles Architects lobby for change at Copenhagen The profession is demanding 15 actions from politicians at the United Nations conference. New tool puts suburbs in green focus A new diagnostic tool that will rate large-scale projects on their environmental, economic and social performance is today revealed. BREAKING NEWS: Designs unveiled for Sydney Metro stations We can reveal three different station designs, by teams including Tim Greer, Richard Francis Jones and Keith Cottier. IMAGES: Sydney Opera House opens after refurb Changes bring the interior "in harmony" with the iconic exterior, says Jan Utzon. Architecture Gold Medal leads new awards set Next year's Gold Medal announcement will front a new "people-focused" awards event. VIDEO: Olympic 'cloud' sparkles with light An Australian firm is part of the international team creating a digital light sculpture funded entirely by public donations.