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". . . We have reached a point of historic crisis. The forces generated by the techno-scientific economy are now great enough to destroy the environment, that is to say, the material foundations of human life."—Eric Hobsbawm
The world changed forever in 1945. That year, with the detonations of atomic bombs over Hiroshima and Nagasaki, Japan, man for the first time demonstrated the frightening potential to destroy all human life.
Since then our weapons have grown far more powerful and threatening. Those first wartime atomic bombs, though devastating, were only 121/2 kilotons—equivalent to about 12,500 tons of conventional explosives. The largest bomb successfully tested since the war, by the former Soviet Union, has been estimated at 60 megatons, or almost 5,000 times the power of the Hiroshima and Nagasaki blasts and the equivalent of 60 million tons of TNT.
Even though nuclear-weapons inventories were scaled back as a result of treaties between the United States and the Soviet Union, enough nuclear warheads remain to destroy human life many times over. The destruction unleashed in the Hiroshima bomb is estimated at only a millionth of the destructive power of the world's nuclear arsenal.
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