Head start: Scientists crack beer-froth enigma

It's research like this that makes me wish I had followed up my physics education.

There is the nagging question of whether life exists other than on Earth. The enduring mystery of who made us -- and why.



And then there is this: Why does the foam on a pint of lager quickly disappear but the head on a pint of Guinness linger?



Answers to questions 1 and 2 are still being sought, but the Great Beer Riddle, at least, may soon be solved.



Writing in the prestigious British science journal Nature, an elite scientific duo say they have devised an equation to describe beer froth.

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