See web-only content:
http://www.theatlantic.com/daily-dish/archive/2009/11/-a-beard-second/194602/
The Longest Way 1.0 - one year walk/beard grow time lapse from Christoph Rehage on Vimeo.
It's actually a scientific unit:
It's the physics tiny measurement partner of the light year. Wikipedia defines it as "the length an average physicist's beard grows in a second", equivalent to either 5 or 10 nanometers. I assume the namer intended some humor and, as far as physics jokes go, it's a damn good one. You can convert measurements to beard-seconds using the Google search bar.
This article available online at:
http://www.theatlantic.com/daily-dish/archive/2009/11/-a-beard-second/194602/
