We cross live to Christchurch to talk to one of the entrants, Roger Dennis, in a 48 hour design challenge to come up with a new look for part of the earthquake hit city's central business district.
An American engineer has told the Canterbury Earthquakes Royal Commission he was shocked at the failure of builders to properly fix the floors of the PGC building to its walls.
A seismic engineer says many of the Christchurch buildings destroyed in Tuesday's quake weren't designed to cope with such intense forces - and it's possible damage from the September 4th earthquake went undetected.
The Christchurch City Council is looking to Scandinavia for help with the earthquake re-build. Two Danish based urban design experts are working with the Council over the next four weeks to develop a draft plan for rebuilding the central city.