America forgot how to make a classified nuclear warhead ingredient

The U.S. government forgot how to make a classified component of its own nuclear warheads, then spent $92 million figuring it out again. The material is called Fogbank, and almost everything about it is classified — its composition, its purpose, and how it's manufactured. — Read the rest The post America forgot how to make a classified nuclear warhead ingredient appeared first on Boing Boing.