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Almost 70 years ago, a team at Trinity College in Dublin began a demonstration to show that Tar Pitch, which looks much like a shiny black rock, actually flows – just very slowly.

/READ MORE// Genome Changes in Days From Temperature

The thick goo, which has a viscosity 2 million times that of honey or molasses, dripped one drop at a time, at the rate of one drop per decade.  At that rate, it remained unseen until last year, when physics professor Shane Bergin finally caught it on camera

– proving that Tar Pitch does indeed flow.

The resulting time-lapse was seen over a million times around the world.

There’s more stories from 2013.  Check out the Best of 2013 series here

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