In addition, the threat is worse today than in 1962 because a microchip is a million times more vulnerable to a power surge than the thermonic valves in use in electronics in 1962.The claim <a href="http://www.alternet.org/story/25738/">http://www.alternet.org/story/25738/</a> makes about EMP from a 10-20 kt fission bomb being proportionately weaker than that from the 1.4 Mt Starfish test is blatant nonsense.