This month (and every few years), the arbiters of time at the International Earth Rotation and Reference Systems Service add an extra "leap second" to account for Earth's slightly erratic rotational pattern. (That way, in a few thousand years, we aren't eating lunch at midnight.) It's unnoticeable to most, but not these companies. Here's how much they earn every single second.
A version of this article appeared in the June 2012 issue of Fast Company magazine.