More than two years after the earthquake, Christchurch's Dr Mark Quigley is still hunting for clues that could unlock the seismic secrets hidden beneath the city.

Two years ago today, with a force equal to 15,000 tonnes of TNT, came the devastating aftershock that scientists hoped they would never see.

"What most people want is not knowledge, but certainty." It's an apt quote of philosopher Bertrand Russell that Italy's Professor Massimiano Bucchi borrows to sum up people's expectation of what science should be able to tell us before earthquakes happen

Predicting earthquakes is generally seen as not possible - but in the 1970s some eventual flops sparked a brief stir in the scientific community.

A one-hour civic memorial service will be held at midday tomorrow in Latimer Square, used as a makeshift triage centre on that day two years ago when 185 people died.

New Zealand cities must capitalise on Christchurch's earthquake experience if they are to make themselves more resilient to natural disasters, a top quake expert says.

Despite Gerry Brownlee's best PR spin, everything is not going swimmingly in Christchurch, writes blogger James Dann.

As more people upgrade to smartphones there are growing fears that constant availability for work will destroy work-life balance.

A rally against proposed Christchurch school closures and mergers is planned this afternoon following Hekia Parata's controversial education plans for the area.

Nearly two years on from the February 22 earthquake, fashion label World is finally returning to Christchurch.

The Government has teamed up with Microsoft in Christchurch to strengthen the technology capability of 50 non-profit organisations - some badly affected by the Canterbury earthquakes.

The five year schedule for the rebuild of Christchurch's earthquake-damaged roads and underground services was released 7 September 2012. The plan includes a map setting out indicative timeframes for infrastructure repairs in different areas of the city. The work has been prioritised based on a range of factors, with the aim being to first fix the worst-affected areas that impact on the most people. courtesy YouTube/cerachch

A time-lapse video showing how post-quake Christchurch's cityscape changed last year has been released by the Canterbury Earthquake Recovery Authority.

The Canterbury Earthquake Recovery Authority has released a video showing time-lapse photography of the Christchurch Central Business District taken between 1 February 2012 and 31 January 2013. Shot from the roof of HSBC Tower on Worcester Boulevard, the video depicts changes to the CBD landscape looking out towards Cathedral Square.

Christchurch city councillors have been warned that the cost of fixing quake damaged underground infrastructure could be much more than originally thought.