None, but several scientists were injured during experimental tests, "tickling the dragon's tail".There were thousands of experiments before the first bomb, showing the effects of nuclear chain reaction. How many cities were blown up?
None, they experimented in the New Mexico desert before they used the bomb to end the war.Then they experimentally tested the bomb before they used it in the war. They had a good idea of the power, since stayed out of the blast radius while watching the test. How many cities were blown up before they finally did the REAL experiment?
There were a series of experiments showing how nuclear chain reactions work, how much energy is generated and testing the approach to critical mass. There were thousands of experiments that helped to build the bomb.Everything was theory until that first explosion in the desert.
There are no experiments that show even the smallest measurable climate change from a man made greenhouse gas emission too or capture from the atmosphere.Global warming is just as valid a theory but you won't believe it even when the ice all melts in your ex-Nazi neighborhood.
Ice melts and water freezes; don't panic.