Every once in a while, you hear someone mentioning getting rid of all the nuclear weapons on earth. The simplest way to do that would be to detonate them all, but that's kind of missing the point. Kurzgesagt describes what that would be like. It ain't pretty.
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Krakatoa caused The Year Without a Summer. They are likely extrapolating from that.
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Fantastic Video. These theoretical nuclear/meteor scenarios are interesting. One thing I've always been skeptical of - how do they know for sure it would be enough debris/ash/whatever going into the atmosphere to cause a nuclear winter? I'm not saying the experts are wrong - it's just crazy to think about. I duno, it's just too much for my small brain to think of an event so massive in scale it could heat up or freeze the entire planet. Or block out the sun. That was a good video tho.
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