The road to plentiful aluminum was long, and literally dozens of important scientists were involved over a period of centuries in the effort to purify the metal. In the end, the solution would come almost simultaneously from two scientists, each just 22 years of age.
The first class of nuclear submarines were a learning experience for the Soviet Navy. The November class boats experienced numerous difficulties and accidents, culminating in what has been described as a potential “Underwater Chernobyl."