Why do Guinness bubbles go downwards?
Why do Guinness bubbles go downwards?  
Podcast: Ask the Naked Scientists
Published On: Fri Mar 14 2014
Description: How do 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? Like this podcast? Please help us by supporting the Naked Scientists