Random question for the day.
Do you know how to tell if an egg is bad (without cracking it open)?

As the egg ages, however, it loses both moisture and carbon dioxide — shrinking — so that the size of the air space increases. And the size of the air space determines the buoyancy of the egg.

~So if you submerge a very fresh egg in water, it will lie on the bottom.
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~An egg that is a week or so old will lie on the bottom but bob slightly.
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~An egg that is three weeks or so old will balance on its small end, with the large end reaching for the sky.
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~And a bad egg will float.