New Calculations on Blackbody Energy Set the Stage for Clocks With Unprecedented Accuracy (http://www.sciencedaily.com/releases/2011/05/110511162528.htm)
QuoteScienceDaily (May 14, 2011) — A team of physicists from the United States and Russia announced that it has developed a means for computing, with unprecedented accuracy, a tiny, temperature-dependent source of error in atomic clocks. Although small, the correction could represent a big step towards atomic timekeepers' longstanding goal of a clock with a precision equivalent to one second of error every 32 billion years -- longer than the age of the universe.
My bold!
I bet you're glad you didn't rush into buying one of those dodgy current generation atomic clocks.