One third of the buildings in central Christchurch were so badly damaged in last week's earthquake they may need to be demolished, authorities inNew Zealand have warned, as the death toll from the country's worst-ever disaster reaches 145, with 200 still missing.

 http://www.guardian.co.uk/world/2011/feb/26/christchurch-earthquake-new-zealand-rescue

http://www.news.com.au/world/christchurch-cathedral-before-and-after/story-e6frfl00-1226010081646

http://www.bbc.co.uk/news/world-asia-pacific-12534181

http://www.boston.com/bigpicture/2011/02/christchurch_earthquake.html

http://blogs.agu.org/landslideblog/2011/02/23/on-the-causes-of-the-high-levels-of-loss-in-the-christchurch-earthquake/

http://www.bbc.co.uk/news/world-asia-pacific-12565923

http://www.guardian.co.uk/world/2011/feb/25/new-zealand-earthquake-christchurch-louise-amantillo