Liquefaction has been a major effect of the two large earthquakes at Christchurch over the past 6 months (Sep. 4th, 2010 and Feb. 22nd 2011). Here’s a clever little video illustrating liquefaction in a wheel barrow that’s gathered over 35,000 hits at the time of writing:

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Update: My thanks to reader ‘Ross’ who brought this to my attention.

(Updated 6th March to add tags.)

Other articles in Code for life:

Lyttelton earthquake peak ground acceleration

On learning the sounds of a new (spoken) language

Beautiful peaceful images

On alternatives to academic careers and “letting go”

Deleting a gene can turn an ovary into a testis in adult mammals