I had no idea how many of these experiments there were.
"Early in the Cold War, in studies known as Project GABRIEL and Project SUNSHINE, researchers in the United States, the United Kingdom, and Australia tried to determine how much nuclear fallout would be required to make the Earth uninhabitable.[90][91] They realized that atmospheric nuclear testing had provided them an opportunity to investigate this. Such tests had dispersed radioactive contamination worldwide, and examination of human bodies could reveal how readily it was taken up and hence how much damage it caused."
I guess that is indeed ONE way to answer the question... the 1950s era had so many absolutely crazy things happen, back when nuclear weapons were brand new and people didn't realize what impacts they would have.
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[ 5.7 ms ] story [ 15.3 ms ] thread"Early in the Cold War, in studies known as Project GABRIEL and Project SUNSHINE, researchers in the United States, the United Kingdom, and Australia tried to determine how much nuclear fallout would be required to make the Earth uninhabitable.[90][91] They realized that atmospheric nuclear testing had provided them an opportunity to investigate this. Such tests had dispersed radioactive contamination worldwide, and examination of human bodies could reveal how readily it was taken up and hence how much damage it caused."
I guess that is indeed ONE way to answer the question... the 1950s era had so many absolutely crazy things happen, back when nuclear weapons were brand new and people didn't realize what impacts they would have.