I guess it was only a matter if time before our meddling with the earth via fracking became a major problem, or perhaps better put, a bigger problem. Man-made earthquakes are now a reality, but this article suggests they have been around a lot longer than fracking.
The New Zealand city of Christchurch was struck by three major tremors yesterday and a large number of minor ones. These are all considered aftershocks of the first major earthquake that Christchurch suffered some time ago. There is now expected to be a period of increased seismic activity.
The following videos feature footage and updates concerning the latest earthquake developments in Christchurch.