I read Tuffnell's Toffees for Buttery Fingers at Word Soup on the 27 October 2011. Now that I've come to terms with my adenoidal Lancashire accent & nervous stuttering I kind-of think it went okay... http://www.youtube.com/watch?v=_ABLRawErfc
See How the Buoyancy Force Works in Water or Air - The buoyancy force gives you the boost that helps you float and do cool maneuvers in water. This experiment lets you see it in action.
6 hours ago