Does hot water freeze faster than cold water?

[RBatson]

Originally posted by KiltedBanshees93GT
ok, one of the articles on that page that was linked brought another question to my mind.
Wht is it that bubbles always go toward the surface in a carbonated drink, including beer, except Guiness. (the bubbles drop in Guiness)

J

Interesting, I don't drink dark beer so I'm unfamiliar with this but had to do a search... basically the larger bubbles rise faster than the smaller ones, displacing liquid(beer) which causes the smaller (lighter) bubbles to be sucked beneath.

http://www.fluent.com/about/news/pr/pr5.pdf