Hello how may I help you? I have a question about a search I recently tried finding out more about. It's bugging me that I cannot find it, can you help? Sure I can help you out I want to know what the biggest recorded cloud of all time was. By biggest do you mean widest? I mean tallest, and it's a man-made cloud. Or tallest and heaviest? Tallest, I think it was created from a bomb. What bomb? An atom bomb, if i remember correctly. Do you know the name of it? Yes I do one moment please Okay. Tsar Bomba is your answer Okay thanks for that!