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And how about dry ice? I was using it to make some interesting photos and thought dry ice vapor would be lighter than air and drift upward. Wrong! It is heavier than air and sinks to its lowest point. I had to do some quick changes for that photoshoot.
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The purpose of life is not to be happy. It is to be useful, to be honorable, to be compassionate, to have it make some difference that you have lived and lived well. anonymous
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