The conversation between human and AI assistant.
What would happen if a nuclear bomb of about 1000 megatons detonated in the middle of a huge city?
That's scary. How many casualties do you think there would be?
It's hard to estimate the exact number of casualties, but it would likely be in the millions. The blast would cause immediate fatalities, and the radiation released by the explosion would cause long-term health problems, including cancer and birth defects.