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When I buy a pint of Guinness there is no doubt the liquid is black.
Yet the bubbles that settle on top, which are made of the same stuff, are white.
The same is true of many types of beer.
Why?
Yet the bubbles that settle on top, which are made of the same stuff, are white.
The same is true of many types of beer.
Why?
Mar 28, 2003 3:46 AM
