Yes. It’s been done, in fact. The bomb dropped on Hiroshima was about 15 kt – equivalent to 15,000 tonnes of TNT. The biggest nuclear bomb ever tested was 50 megatons – 3,000 times more powerful and equivalent to 50 million tonnes of TNT. What a terrible thing to do with science.
Having been to the peace memorial museum at Hiroshima I can honestly say I really hope we don’t although it appears Martin says we have already. Nuclear bombs are horrible things. They do so much more damage than just causing explosions. http://en.wikipedia.org/wiki/Sadako_Sasaki I think everyone in the world needs to know this story.