Supercomputers Can't Mimic Nuke Blast

View of the Tera 10 computer at the Atomic Energy Mission's military arm, in this Sept. 7, 2006 file photo in Bruyeres le Chatel, south of Paris. The computer carries out nuclear simulations that replace the underground tests in the South Pacific that were halted in 1996. While North Korea was detonating an apparent nuclear bomb deep inside a mountain last week, France was verifying its nuclear arms, too , with a battalion of soundless black calculators bunkered beneath a meadow. (AP Photo/Michel Euler)

(AP) -- While North Korea was testing a nuclear bomb, France was verifying its nuclear arms, too - with a battalion of soundless, black, cabinet-sized calculators buried beneath a meadow.