โ
Sykes, Lynn R
๐
Fiction
๐
2017
๐
Columbia University Press
๐
English
โ 7 MB
In December 2016, the Bulletin of Atomic Scientists moved their iconic "Doomsday Clock" thirty seconds forward to two and a half minutes to midnight, the latest it has been set since 1952, the year of the first United States hydrogen bomb test. But a group of scientists--geologists, engineers, and p