Listen to the big bang - now in hi-fi!

The Planck cosmology probe has forced scientists to revise their estimates of the universe's age and the cosmic balance of matter and dark energy -- and now it's led a physicist to remix the sound of the big bang as well.The new big-bang sound was created over the weekend by John Cramer, a professor emeritus of physics at the University of Washington. The audio file follows up on Cramer's decade-ol...