A worst-case nuclear scenario: what to do
How dangerous are nuclear bombs?
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What is a nuclear explosion?
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Several types of dangers
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How much time after announcement?
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Where announcements would be
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What it looks like
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First 30-45 minutes: protect your body
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What to do in case of a nuclear attack
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Lie face down
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If you’re in a vehicle
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US Congress makes UFO evidence public
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