Discuss: Why do Guinness bubbles go downwards?

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Offline thedoc

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Discuss: Why do Guinness bubbles go downwards?
« on: 17/03/2014 17:03:24 »
How does the processing power of a brain compare with a computer? How can we shield astronauts en-route to Mars? Do ants prefer protein? What causes left handedness? Why do bubbles go downwards in a glass of Guinness? And do older makes of television emit X-rays?
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« Last Edit: 17/03/2014 17:03:24 by _system »